Prevalence, types and determinants of anemia among pregnant women in Sudan: a systematic review and meta-analysis
Open accessAbstract
BACKGROUND: Anemia during pregnancy is a public health problem especially in developing countries and it is associated with maternal and perinatal adverse outcomes. There is no meta-analysis on anemia during pregnancy in Sudan. The current systemic review and meta-analysis was conducted to assess the prevalence, types and determinant of anemia during pregnancy in Sudan. METHODS: Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline was followed. The databases (PubMed, Cochrane Library, Google Scholar, CINAHL, and African Journals Online) were searched using; anemia, pregnancy related anemia and Sudan. Joanna Briggs Institute Meta-Analysis of Statistics Assessment and Review Instrument (JBI-MAStARI) and Modified Newcastle - Ottawa quality assessment scale were used for critical appraisal of studies. The pooled Meta logistic regression was computed using OpenMeta Analyst software. RESULTS: = 0.465) between the anemic and no anemic women. Malaria was investigated in six studies. Pregnant women who had malaria infection during pregnancy were 1.94 times more likely to develop anemia than women who had no malaria infection (OR = 1.94, 95% CI =1.33-2.82). Six (37.5%) studies investigated type of anemia. The pooled prevalence of iron deficiency anemia (IDA) among pregnant women in Sudan was 13.6% (95% CI = 8.9-18.2). CONCLUSION: There is a high prevalence of anemia among pregnant in the different region of Sudan. While age and parity have no association with anemia, malaria infection was associated with anemia. Interventions to promote the strengthening of antenatal care, and access and adherence to nutrition, and malaria preventive measures are needed to reduce the high level of anemia among pregnant women in Sudan.
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Several systematic reviews have confirmed that P. falciparum is the highest inhabited organism in pregnancy to cause infection.
“Several systematic reviews have confirmed that P. falciparum is the highest inhabited organism in pregnancy to cause the infection [7, 22].”
From Malaria in pregnancy: Meta-analyses of prevalence and associated complications (2024) · cites this paper as [22]
The Results section reports an association between malaria infection and anemia in pregnant women in Sudan, but does not compare organisms or malaria species. A References entry names a study of P. falciparum infection during pregnancy; it does not establish the claim that P. falciparum is the most prevalent organism. Searches for that comparison and for the claim’s wording found no supporting passage in our copy. (LLM, conf=0.72)
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Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement
Moher, D., Liberati, A., Tetzlaff, J., Altman, D. G., & The PRISMA Group (2009) · PLoS Medicine · doi:10.1371/journal.pmed.1000097 · Cited by 64,042 · cited 1× · see citing works
“Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline was followed for conduction of this systematic review and meta-analysis [25].”
Preferred reporting items for systematic reviews and meta-analyses: The PRISMA statement
Moher, D., Liberati, A., Tetzlaff, J., Altman, D. G., & the PRISMA Group* (2009) · Annals of Internal Medicine · doi:10.7326/0003-4819-151-4-200908180-00135 · Cited by 37,554 · see citing works
Maternal and child undernutrition and overweight in low-income and middle-income countries
Black, R. E., Victora, C. G., Walker, S. P., Bhutta, Z. A., Christian, P., de Onis, M., Ezzati, M., Grantham-McGregor, S., Katz, J., Martorell, R., et al. (2013) · The Lancet · doi:10.1016/s0140-6736(13)60937-x · Cited by 8,475 · cited 4× · see citing works
“Global data shows that 56% of pregnant women in low and middle income countries have anemia [1].”
BackgroundInfluentialWorldwide prevalence of anaemia, WHO Vitamin and Mineral Nutrition Information System, 1993–2005
McLean, E., Cogswell, M., Egli, I., Wojdyla, D., & de Benoist, B. (2009) · Public Health Nutrition · doi:10.1017/s1368980008002401 · Cited by 2,734 · see citing works
Stevens, G. A., Finucane, M. M., De‐Regil, L. M., Paciorek, C., Flaxman, S. R., Branca, F., Peña‐Rosas, J. P., Bhutta, Z. A., & Ezzati, M. (2013) · The Lancet Global Health · doi:10.1016/s2214-109x(13)70001-9 · Cited by 1,977 · see citing works
Levy, A., Fraser, D., Katz, M., Mazor, M., & Sheiner, E. (2005) · European Journal of Obstetrics, Gynecology, and Reproductive Biology · doi:10.1016/j.ejogrb.2005.02.015 · Cited by 497 · cited 1× · see citing works
“Anemia during pregnancy is reported to have negative maternal and child health effect and increase the risk of maternal and perinatal mortality [7, 8].”
BackgroundHookworm-Related Anaemia among Pregnant Women: A Systematic Review
Brooker, S., Hotez, P., & Bundy, D. A. (2008) · PLoS Neglected Tropical Diseases · doi:10.1371/journal.pntd.0000291 · Cited by 424 · cited 1× · see citing works
“The causes of anemia during pregnancy in developing countries are multifactorial; these include micronutrient deficiencies of iron, folate and vitamin A and B12, anemia due to parasitic infections such as malaria and hookworm or chronic infections like tuberculosis and HIV [4, 5].”
BackgroundAli, A. A., Rayis, D. A., Abdallah, T. M., Elbashir, M., & Adam, I. (2011) · BMC Research Notes · doi:10.1186/1756-0500-4-311 · Cited by 175 · cited 3× · see citing works
“Secondly anemia during pregnancy in Sudan (included in these studies) has been studied mainly in Khartoum, Eastern Sudan and Geizera.”
BackgroundInfluentialSelf-citationMeta-analyses: heterogeneity and subgroup analysis
Sedgwick, P. M. (2013) · BMJ · doi:10.1136/bmj.f4040 · Cited by 170 · cited 1× · see citing works
“10 and I(2) > 50 was taken as standard to indicate the presence of heterogeneity of the included studies [30].”
BackgroundLebso, M., Anato, A., & Loha, E. (2017) · PLoS ONE · doi:10.1371/journal.pone.0188783 · Cited by 149 · see citing works
Kassa, G. M., Muche, A. A., Berhe, A. K., & Fekadu, G. A. (2017) · BMC Hematology · doi:10.1186/s12878-017-0090-z · Cited by 139 · see citing works
Prevalence and risk factors for anaemia in pregnant women of eastern Sudan
Adam, I., Khamis, A. H., & Elbashir, M. I. (2005) · Transactions of the Royal Society of Tropical Medicine and Hygiene · doi:10.1016/j.trstmh.2005.02.008 · Cited by 129 · cited 5× · see citing works
“Secondly anemia during pregnancy in Sudan (included in these studies) has been studied mainly in Khartoum, Eastern Sudan and Geizera.”
BackgroundInfluentialSelf-citationMcClure, E. M., Meshnick, S. R., Mungai, P., Malhotra, I. J., King, C. L., Goldenberg, R. L., Hudgens, M. G., Siega‐Riz, A. M., & Dent, A. E. (2014) · PLoS neglected tropical diseases · doi:10.1371/journal.pntd.0002724 · Cited by 94 · cited 1× · see citing works
“The causes of anemia during pregnancy in developing countries are multifactorial; these include micronutrient deficiencies of iron, folate and vitamin A and B12, anemia due to parasitic infections such as malaria and hookworm or chronic infections like tuberculosis and HIV [4, 5].”
BackgroundHaemoglobin status and predictors of anaemia among pregnant women in Mpigi, Uganda
Ononge, S., Campbell, O., & Mirembe, F. (2014) · BMC Research Notes · doi:10.1186/1756-0500-7-712 · Cited by 93 · see citing works
Antenatal iron and folic acid supplementation use by pregnant women in Khartoum, Sudan
Abdullahi, H., Gasim, G. I., Saeed, A., Imam, A. M., & Adam, I. (2014) · BMC Research Notes · doi:10.1186/1756-0500-7-498 · Cited by 88 · see citing works
Self-citationPlacental malaria and its effect on pregnancy outcomes in Sudanese women from Blue Nile State
Omer, S. A., Idress, H. E., Adam, I., Abdelrahim, M., Noureldein, A. N., Abdelrazig, A. M., Elhassan, M. O., & Sulaiman, S. M. (2017) · Malaria Journal · doi:10.1186/s12936-017-2028-0 · Cited by 84 · cited 3× · see citing works
“5%) studies were conducted in eastern Sudan (New Half, Kassala and Gadarif ) [9, 10, 13, 22–24], three studies were conducted in Geizera [12, 14, 16], one study was conducted in Darfur and one study was conducted in Blue Nile [11, 20], Additional file 2.”
BackgroundSelf-citationObai, G., Odongo, P., & Wanyama, R. (2016) · BMC Pregnancy and Childbirth · doi:10.1186/s12884-016-0865-4 · Cited by 80 · see citing works
Sexual origins of placental dysfunction.
Edwards, A., Megens, A., Peek, M., & Wallace, E. (2000) · The Lancet · doi:10.1016/s0140-6736(99)05061-8 · Cited by 76 · cited 2× · see citing works
“Data analysis and heterogeneity assessment OpenMeta Analyst software for Windows [28, 29] was used to perform all the meta-analyses of prevalence and determinants (age, parity and malaria) of anemia.”
MethodAnaemia and low birthweight in western Sudan.
Haggaz, A. D., Radi, E. A., & Adam, I. (2010) · Transactions of the Royal Society of Tropical Medicine and Hygiene · doi:10.1016/j.trstmh.2009.07.013 · Cited by 75 · cited 2× · see citing works
“5%) studies were conducted in eastern Sudan (New Half, Kassala and Gadarif ) [9, 10, 13, 22–24], three studies were conducted in Geizera [12, 14, 16], one study was conducted in Darfur and one study was conducted in Blue Nile [11, 20], Additional file 2.”
BackgroundSelf-citationAsrie, F. (2017) · Journal of Blood Medicine · doi:10.2147/jbm.s134932 · Cited by 66 · see citing works
Transcriptome coexpression map of human embryonic stem cells
Li, H., Liu, Y., Shin, S., Sun, Y., Loring, J., Mattson, M. P., Rao, M., & Zhan, M. (2006) · BMC Genomics · doi:10.1186/1471-2164-7-103 · Cited by 64 · cited 1×
“Malaria was investigated (peripheral/ placental) in six studies [9, 10, 13, 20, 22, 23], Additional file 3.”
BackgroundAdam, I., Ahmed, S., Mahmoud, M. H., & Yassin, M. I. (2012) · Diagnostic Pathology · doi:10.1186/1746-1596-7-30 · Cited by 63 · cited 6× · see citing works
“Only one study reported 4.0% copper deficiency in pregnant women in Geizera [12].”
BackgroundInfluentialSelf-citationTadesse, S., Seid, O., G/Mariam, Y., Fekadu, A., Wasihun, Y., Endris, K., & Bitew, A. (2017) · PLoS ONE · doi:10.1371/journal.pone.0173173 · Cited by 61 · see citing works
Red blood cell distribution width and iron deficiency anemia among pregnant Sudanese women
Abdelrahman, E. G., Gasim, G. I., Musa, I. R., Elbashir, L. M., & Adam, I. (2012) · Diagnostic Pathology · doi:10.1186/1746-1596-7-168 · Cited by 56 · cited 8× · see citing works
“Secondly anemia during pregnancy in Sudan (included in these studies) has been studied mainly in Khartoum, Eastern Sudan and Geizera.”
BackgroundInfluentialSelf-citationMubarak, N., Gasim, G. I., Khalafalla, K., Ali, N. I., & Adam, I. (2014) · Transactions of the Royal Society of Tropical Medicine and Hygiene · doi:10.1093/trstmh/tru044 · Cited by 49 · cited 8× · see citing works
“Secondly anemia during pregnancy in Sudan (included in these studies) has been studied mainly in Khartoum, Eastern Sudan and Geizera.”
BackgroundInfluentialSelf-citationDeterminants of prenatal anemia in Ethiopia
abay, A., Yalew, H. W., Tariku, A., & Gebeye, E. (2017) · Archives of Public Health · doi:10.1186/s13690-017-0215-7 · Cited by 48 · see citing works
Zinc, Parity, Infection, and Severe Anemia Among Pregnant Women in Kassla, Eastern Sudan
Mohamed, A. A., Ali, A. A., Ali, N. I., Abusalama, E. H., Elbashir, M., & Adam, I. (2011) · Biological Trace Element Research · doi:10.1007/s12011-010-8704-3 · Cited by 48 · cited 7× · see citing works
“C-reactive protein was investigated in one study [13].”
BackgroundInfluentialSelf-citationAdam, I., Babiker, S., Mohmmed, A. A., Salih, M. M., Prins, M. H., & Zaki, Z. M. (2007) · Malaria Journal · doi:10.1186/1475-2875-6-110 · Cited by 43 · see citing works
Self-citationAbdelrahim, I. I., Adam, G. K., Mohmmed, A. A., Salih, M., Ali, N. I., Elbashier, M. I., & Adam, I. (2009) · Transactions of the Royal Society of Tropical Medicine and Hygiene · doi:10.1016/j.trstmh.2008.10.007 · Cited by 39 · see citing works
Self-citationWessells, K. R., Ouédraogo, C. T., Young, R., Faye, M., Alex Brito, O., & Hess, S. Y. (2017) · Nutrients · doi:10.3390/nu9050430 · Cited by 38 · cited 12× · see citing works
“The pooled prevalence of iron deficiency anemia (IDA) among pregnant women in Sudan was 13.6% (95% CI = 8.9–18.2).”
BackgroundInfluentialAnaemia, Zinc and Copper Deficiencies Among Pregnant Women in Central Sudan
Bushra, M., Elhassan, E., Ali, N. I., Osman, E., Bakheit, K. H., & Adam, I. (2010) · Biological Trace Element Research · doi:10.1007/s12011-009-8586-4 · Cited by 36 · cited 5× · see citing works
“5%) studies were conducted in eastern Sudan (New Half, Kassala and Gadarif ) [9, 10, 13, 22–24], three studies were conducted in Geizera [12, 14, 16], one study was conducted in Darfur and one study was conducted in Blue Nile [11, 20], Additional file 2.”
BackgroundInfluentialSelf-citationAdam, I., A-Elbasit, I. E., Salih, I., & Elbashir, M. I. (2005) · Annals of Tropical Medicine & Parasitology · doi:10.1179/136485905x36244 · Cited by 34 · cited 2× · see citing works
“The minimum sample size was 125 participants in a study conducted in New Halfa [22].”
BackgroundSelf-citationGebreegziabher, T., & Stoecker, B. (2017) · PLoS ONE · doi:10.1371/journal.pone.0184742 · Cited by 33 · cited 5× · see citing works
“Generally various risk factors (residence, parity, nutritional) for anemia during have g pregnant women in Sudan been reported in Ethiopia [35, 37–41].”
BackgroundInfluentialElmugabil, A., Rayis, D. A., Abdelmageed, R. E., Adam, I., & Gasim, G. I. (2017) · Future Science OA · doi:10.4155/fsoa-2016-0096 · Cited by 33 · see citing works
Self-citationAdam, I., & Ali, A. A. (2016) · International Journal of Pharmaceutical Research · doi:10.5772/63211 · Cited by 33
Self-citationEpidemiology of anaemia among pregnant women in Geizera, central Sudan
Abdelgadir, M., Khalid, A., Ashmaig, A., Ibrahim, A.-S., Ahmed, A. M., & Adam, I. (2012) · Journal of Obstetrics and Gynaecology Research · doi:10.3109/01443615.2011.617849 · Cited by 31 · cited 6× · see citing works
“Only one study reported 4.0% copper deficiency in pregnant women in Geizera [12].”
BackgroundInfluentialSelf-citationA Higher Rate of Iron Deficiency in Obese Pregnant Sudanese Women
Abbas, W., Adam, I., Rayis, D. A., Hassan, N. G., & Lutfi, M. F. (2017) · Open Access Macedonian Journal of Medical Sciences · doi:10.3889/oamjms.2017.059 · Cited by 26 · cited 1× · see citing works
“5%) out of the 16 included studies investigated type of anemia [10, 12, 13, 15, 17, 19].”
Self-citationEbuy, Y., Alemayehu, M., Mitiku, M., & Goba, G. K. (2017) · PLoS ONE · doi:10.1371/journal.pone.0186724 · Cited by 19 · see citing works
Okafor, I. M., Okpokam, D. C., Antai, A., & Usanga, E. A. (2017) · Nigerian Journal of Physiological Sciences · Cited by 16 · see citing works
Mengist, H. M., Zewdie, O., & Belew, A. (2017) · BMC Research Notes · doi:10.1186/s13104-017-2770-y · Cited by 14 · see citing works
Malaria, Schistosomiasis, and Related Anemia
Gasim, G. I., & Adam, I. (2016) · InTech eBooks · doi:10.5772/63396 · Cited by 7 · see citing works
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Liyew, A. M., Tesema, G. A., Alamneh, T. S., Worku, M. G., Teshale, A. B., Alem, A. Z., Tessema, Z. T., & Yeshaw, Y. (2021) · PLoS ONE · doi:10.1371/journal.pone.0250560 · Cited by 107 · see citing works
“However, this finding is lower than the studies done in Mali [13], India [29], Sudan [15], and Pakistan [16].”
BackgroundResultRahman, R. A., Idris, I. B., Isa, Z. M., Rahman, R. A., & Mahdy, Z. A. (2022) · Frontiers in Nutrition · doi:10.3389/fnut.2022.847693 · Cited by 62 · see citing works
“Anemia in pregnancy was prevalent in Sudan regardless of age and parity (32).”
BackgroundFite, M. B., Assefa, N., & Mengiste, B. (2021) · Archives of Public Health · doi:10.1186/s13690-021-00711-3 · Cited by 82 · see citing works
Fite, M. B., Roba, K. T., Oljira, L., Tura, A. K., & Yadeta, T. A. (2021) · PLOS ONE · doi:10.1371/journal.pone.0249789 · Cited by 69 · see citing works
Geta, T. G., Gebremedhin, S., & Omigbodun, A. (2022) · PLoS ONE · doi:10.1371/journal.pone.0267005 · Cited by 54 · see citing works
Dorsamy, V., Bagwandeen, C., & Moodley, J. (2022) · Systematic Reviews · doi:10.1186/s13643-022-01884-w · Cited by 53 · see citing works
Seid, A., Fufa, D. D., Weldeyohannes, M., Tadesse, Z., Fenta, S. L., Bitew, Z., & Dessie, G. (2023) · Food Science & Nutrition · doi:10.1002/fsn3.3388 · Cited by 39 · see citing works
“…of maternal anemia in different regions of Africa is 35.6% in sub- Saharan Africa (Fite et al., 2021), 41.82% in East Africa (Liyew et al., 2021), 31% in South Africa (Dorsamy et al., 2022), 31.6%– 53% in Ethiopia (Hidru et al., 2020; Kassa et al., 2017), and 53% in Sudan (Adam et al., 2018).”
BackgroundInfluentialThe Prevalence of Anemia among Pregnant Women in China: A Systematic Review and Meta-Analysis
Zhou, Y., Lyu, Y., Ye, W., Shi, H., Peng, Y., Wen, Z., Narayan, A., Huang, X., Chang, S., Yang, Y. H., et al. (2024) · Nutrients · doi:10.3390/nu16121854 · Cited by 30 · see citing works
Elmardi, K. A., Adam, I., Malik, E. M., Abdelrahim, T. A., Elhag, M. S., Ibrahim, A. A., Babiker, M. A. A., Elhassan, A. H., Kafy, H. T., Elshafie, A. T. E., et al. (2020) · BMC Public Health · doi:10.1186/s12889-020-09252-w · Cited by 43 · see citing works
“On the other hand, this study showed a lower prevalence of anaemia among PW compared to an overall estimate of 53% generated by a systematic review of published research from Sudan [26].”
ResultSelf-citationAzzam, A., Khaled, H., Alrefaey, A., Basil, A., Ibrahim, S., Elsayed, M. S., Khattab, M., Nabil, N., Abdalwanees, E., & Halim, H. (2025) · BMC Pregnancy and Childbirth · doi:10.1186/s12884-024-07111-9 · Cited by 32 · see citing works
“For instance, previous country-specific meta-analyses estimated the prevalence of anemia among pregnant women to be 31.6% in Ethiopia [9], 53% in Sudan [10], and 15% in Iran [11].”
InfluentialMalaria in pregnancy: Meta-analyses of prevalence and associated complications
Das, J. K., Lakhani, S., Rahman, A. R., Siddiqui, F., Ali Padhani, Z., Rashid, Z., Mahmud, O., Naqvi, S. K., Amir Naseem, H., Jehanzeb, H., et al. (2024) · Epidemiology and Infection · doi:10.1017/s0950268824000177 · Cited by 31 · see citing works
“Several meta-analyses support our findings as the overall odds of malaria of anaemia are higher amongst pregnant women with malaria [24].”
ResultBalcha, W. F., Eteffa, T., Tesfu, A. A., & Alemayehu, B. A. (2023) · Inquiry : a journal of medical care organization, provision and financing · doi:10.1177/00469580231167731 · Cited by 30 · see citing works
Balcha, W. F., Eteffa, T., Tesfu, A. A., Alemayehu, B. A., Chekole, F. A., Ayenew, A. A., Gessesse, N. A., Getu, A. A., Kassahun, E. A., Gezahegn, T. W., et al. (2023) · Annals of Medicine and Surgery · doi:10.1097/ms9.0000000000000608 · Cited by 27 · see citing works
Anemia among Women Who Visit Bost Hospital for Delivery in Helmand Province, Afghanistan
Anwary, Z., Stanikzai, M. H., Wyar, W. M., Wasiq, A. W., & Farooqi, K. (2021) · Anemia · doi:10.1155/2021/9358464 · Cited by 22 · see citing works
“7%) [11] and Sudan (53%) [16], it was higher than that in Iran (16.”
BackgroundSeu, M., Mose, J., Panigoro, R., & Sahiratmadja, E. (2019) · Anemia · doi:10.1155/2019/1413906 · Cited by 20
Eltayeb, R., Binsaleh, N., Alsaif, G., Ali, R., Alyahyawi, A. R., & Adam, I. (2023) · Nutrients · doi:10.3390/nu15163508 · Cited by 18
“Several factors, such as infections (malaria), poor utilization of health services (antenatal care (ANC)), residency, a low level of education, a short interpregnancy interval, and non-taking supplements in the form of iron-folic acid, are associated with increased risk of anemia during pregnancy [5,6].”
BackgroundSelf-citationAhmed, S., al Mamun, M. A., Mahmud, N., Farzana, N., Sathi, M. S. A., Biswas, B., Datta, A., & Ahmad, T. (2019) · Food and Nutrition Sciences · doi:10.4236/fns.2019.109076 · Cited by 18 · see citing works
“According to many studies, severity of anemia during pregnancy has been found responsible for poor maternal and fetal outcomes [20] [21] [22] [23].”
BackgroundMaternal and neonatal outcomes of grand multiparity in Khartoum, Sudan
Elmugabil, A., Hassan, B., Alhabrdi, N. M., Abdelbagi, A., Rayis, D. A., & Ishag, A. (2022) · African Health Sciences · doi:10.4314/ahs.v22i1.21 · Cited by 18 · see citing works
Beressa, G., Lencha, B., Bosha, T., & Egata, G. (2022) · Scientific Reports · doi:10.1038/s41598-022-20614-9 · Cited by 20 · see citing works
Ali, S. A., Hassan, A., & Adam, I. (2023) · Life · doi:10.3390/life13112220 · Cited by 15 · see citing works
“The main findings of the present study were the identification of a high prevalence of anemia (46.2”
BackgroundMethodResultInfluentialSelf-citationMaternal serum iron status, hepcidin and interleukin-6 levels in women with preeclampsia
Ahmed, Y. I. B., Yagoub, H. S., Hassan, M., Adam, I., & Hamdan, H. Z. (2023) · Frontiers in Physiology · doi:10.3389/fphys.2023.1049994 · Cited by 16 · see citing works
“%) among pregnant women, could have effects on the whole picture and the results of the iron status and hepcidin (Adam et al., 2018).”
BackgroundSelf-citationElmugabil, A., & Adam, I. (2023) · SAGE Open Nursing · doi:10.1177/23779608231173287 · Cited by 14
“Most, if not all, previous reports on anemia during pregnancy have been conducted in central and eastern Sudan (Adam et al., 2009, 2012, 2018; Mubarak et al., 2014; Omer et al., 2017).”
BackgroundResultInfluentialSelf-citationPrevalence and associated factors of undernutrition among pregnant Sudanese women.
Hassan, B., Rayis, D. A., Ahmed, A. B. A., Alhabardi, N., & Adam, I. (2021) · Transactions of the Royal Society of Tropical Medicine and Hygiene · doi:10.1093/trstmh/trab128 · Cited by 13 · see citing works
Self-citationAbbas, W., Elmugabil, A., Hamdan, H., Rayis, D. A., & Adam, I. (2023) · BMC Endocrine Disorders · doi:10.1186/s12902-023-01487-z · Cited by 11 · see citing works
“A recent meta-analysis has shown that anemia and ID are big health problems among pregnant Sudanese women [13].”
BackgroundSelf-citationLingani, M., Zango, S. H., Valéa, I., Samadoulougou, S., Sanou, M. A., Sorgho, H., Sawadogo, E. Y., Dramaix, M. W., Donnen, P., Robert, A. R., et al. (2024) · Pan African Medical Journal · doi:10.11604/pamj.2024.47.2.40612 · Cited by 9 · see citing works
“The report was similar to the finding from other settings, supporting that malaria is a key risk factor which has motivated the initiation of the WHO policy of IPTp-SP as a prevention strategy for malaria and its consequences in SSA [9,24,25].”
ResultFAKTOR RISIKO DAN PENCEGAHAN ANEMIA PADA WANITA USIA SUBUR DI BERBAGAI NEGARA
Pamela, D., Nurmala, I., & Ayu, R. S. (2022) · IKESMA · doi:10.19184/ikesma.v18i3.26510 · Cited by 8
“Keberlangsungan pemeriksaan kesehatan selama kehamilan dapat dilihat dari kunjungan pertama (K1) hingga kunjungan K4 dengan waktu kunjungan sesuai dengan trimester kehamilan (Ugwu and Uneke, 2020). c. Skrining dini zat besi dan konseling gizi Anemia pada wanita hamil juga beresiko meningkatkan kelahiran bayi prematur…”
BackgroundInfluentialMethazia, J., Ngamasana, E. L., Utembe, W., Ogunrombi, M. O., & Nyasulu, P. S. (2020) · Pan African Medical Journal · doi:10.11604/pamj.2020.37.93.22244 · Cited by 10 · see citing works
Anaemia is associated with an increased risk for caesarean delivery
Adam, I., Kheiri, S. A., Sharif, M. E., Ahmed, A. B. A., & Rayis, D. A. (2019) · International Journal of Gynecology & Obstetrics · doi:10.1002/ijgo.12946 · Cited by 11 · see citing works
Self-citationNuwabaine, L., Kawuki, J., Kamoga, L., Sserwanja, Q., Gatasi, G., Donkor, E., Mutisya, L. M., & Asiimwe, J. B. (2024) · BMC Pregnancy and Childbirth · doi:10.1186/s12884-024-06528-6 · Cited by 6 · see citing works
Elmugabil, A., Al-Nafeesah, A., AlEed, A., Alhabardi, N., & Adam, I. (2023) · SAGE Open Nursing · doi:10.1177/23779608231197590 · Cited by 7
Self-citationPrevalence and risk factors of iron deficiency anaemia with pregnancy at Minia University Hospital
Mostafa, E., Mohammed, H., Mohammed, E., & Ali, A. M. (2022) · Minia Journal of Medical Research · doi:10.21608/mjmr.2022.249060 · Cited by 7
“Along with our results Adam and Ali, (12) It is belived that women with high parity have low or no iron staorge as it hass been depleted by the repeated pregnaied hence parous women are more likely to be anemic.”
BackgroundUdho, S., Nankumbi, J., Namutebi, M., Mukunya, D., Ndeezi, G., & Tumwine, J. K. (2022) · South African Journal of Clinical Nutrition · doi:10.1080/16070658.2022.2148909 · Cited by 9 · see citing works
“30 However, our prevalence was lower than the 53% and 59% reported among pregnant women in Sudan 31 and India, 32 but higher than the 5% and 16% reported among pregnant Iranian women in the first and third trimesters respectively.”
ResultIlboudo, B., Traoré, I., Méda, C., Hien, A., Kinda, M., Dramaix-Wilmet, M., Savadogo, G. L., & Donnen, P. (2021) · The Pan African Medical Journal · doi:10.11604/pamj.2021.38.361.26612 · Cited by 6
“The factors most frequently associated with anaemia in pregnancy in Africa are multigestation, short interval between pregnancies, increased gestational age, rural residence, low education or income level, and insufficient preventive measures [4-8].”
BackgroundAntidepressant Prescription in Pregnancy
Andrade, C. (2020) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.20f13347 · Cited by 6 · see citing works
Anemia prevalence and severity among pregnant refugee women settled in the West Nile region, Uganda
Bongomin, F., Kibone, W., Nantale, R., Lebu, S., Awekonimungu, B., Musoke, P., Ebbs, D., Beardsley, R., Muoghalu, C., Ochaya, S., et al. (2025) · PLoS ONE · doi:10.1371/journal.pone.0329970 · Cited by 4 · see citing works
“Nevertheless, our prevalence was comparable to the 53% and 59% reported among pregnant women in Sudan [23] and India [24] but lower than the 78% reported among pregnant women in Ghana [25] respectively.”
Aigbedion, G., Tseng, P., & Puthussery, S. (2025) · Nutrients · doi:10.3390/nu17142338 · Cited by 5 · see citing works
“For example, anaemia prevalence in Uganda is 30% [57] and Ethiopia is 26.4% [58]; however, it is comparable to Sudan at 53% [59] and Ghana at 51% [60].”
InfluentialAballo, J., Adokiya, M. N., & Boah, M. (2025) · Discover Public Health · doi:10.1186/s12982-025-00561-2 · Cited by 3 · see citing works
“Similarly, a pooled prevalence of 53% was reported among Sudanese pregnant women [5], while in South Africa, the pooled prevalence of anaemia in pregnant women was determined to be 31% [6].”
Idriss, M. I., Hussein, A., Mussa, A., Ali, E. W., Ibrahim, I., Modawe, G., Abdalhabib, E., Saboor, M., & Hajissa, K. (2024) · Journal of Medicine and Life · doi:10.25122/jml-2023-0441 · Cited by 5 · see citing works
“It is worth noting that a previous meta-analysis carried out in Sudan [31] also identified Eastern Sudan as having the highest rate of anemia.”
Alemayehu, B., Fenta, S. L., Gessesse, S. S., Gezahegn, T., Kassahun, E., & Balcha, W. F. (2022) · The Pan African Medical Journal · doi:10.11604/pamj.2022.42.76.34686 · Cited by 5
“%) of the mothers had a four and above history of ANC visits, and 292 (78.7”
BackgroundInfluentialAdokiya, M. N., Abodoon, G. N., & Boah, M. (2022) · Women & Health · doi:10.1080/03630242.2022.2030450 · Cited by 7 · see citing works
“Estimates of the prevalence of anemia among pregnant women range between 32% and 53% in parts of Africa (Adam, Ibrahim, and Elhardello 2018; Kassa et al. 2017).”
BackgroundMethodInfluentialCavalcanti, R. D. A. S., Diniz, A. D. S., & de Arruda, I. D. (2019) · Journal of the American College of Nutrition · doi:10.1080/07315724.2019.1592725 · Cited by 5
“It has been recorded for a long time that the populations most affected by anemia are women of childbearing age, pregnant women, and children (4, 5).”
BackgroundMoges, S., Kussa, S., Endale, A., Lajore, B. A., & Mekango, D. E. (2025) · Maternal-Fetal Medicine · doi:10.1097/fm9.0000000000000281 · Cited by 2 · see citing works
Anemia in pregnant women: findings from Kuwait birth cohort study
Al-Taiar, A., Ziyab, A., Hammoud, M., Al-Sabah, R., & Akhtar, S. (2025) · BMC Pregnancy and Childbirth · doi:10.1186/s12884-025-07439-w · Cited by 4 · see citing works
“…are challenging due to methodological differences, such as the timing of assessments across trimesters and the use of venous versus capillary blood samples [15, 22], anemia in pregnant women in Kuwait seems less significant as a public health concern compared to low-income settings [44, 45].”
Infectious and obstetric determinants of anemia among pregnant women in Southwest Ethiopia
Yosef, T., Gizachew, A., Fetene, G., Girma, D., Setegn, M., Tesfaw, A., Sisay, B., & Shifera, N. (2024) · Frontiers in Global Women's Health · doi:10.3389/fgwh.2024.1421884 · Cited by 4 · see citing works
“This fi nding aligns with studies conducted in Ethiopia and Sudan (3, 29, 30).”
ResultPrevalence and Determinants of Anemia during Pregnancy at Hodeida City, (Yemen) during the Year 2021
Gonaid, N. M. H., El-Sanousi, S., & Kadi, H. (2022) · International Journal of Health Sciences and Research · doi:10.52403/ijhsr.20220304 · Cited by 4
“No significant association reached in the present study between AIP and the age of pregnant woman, as not reached too in Sudanese study conducted during 2018 ((39)), and study conducted in Libya ((40)).”
BackgroundFite, M. B., Denio, A. D., Muyhe, A., Roro, E. M., Desalegn, M., & Gurmesa, T. T. (2020) · International Journal of Scientific Reports · doi:10.18203/issn.2454-2156.intjscirep20205031 · Cited by 5 · see citing works
“7% in Pakistan that is why anaemia has got consideration as public health concerns.(6-8) ABSTRACT”
BackgroundAl-Nimer, M., & HamaSalih, R. M. (2019) · Journal of Pharmaceutical Negative Results · doi:10.4103/jpnr.jpnr_7_19 · Cited by 4
“Nutritional deficiency of both Vitamin D3 and iron was observed in children under 5 years old.[16] Significant improvement of red cell indices is related to both iron therapy and Vitamin D3.”
BackgroundPrevalence of Anemia among Antenatal Women: A Cross Sectional Study from North Western India
Kumari, S., Rani, K., Baby, P., & Ravi, R. (2025) · Iranian Journal of Nursing and Midwifery Research · doi:10.4103/ijnmr.ijnmr_376_23 · Cited by 3
Maternal Anemia and Offspring Outcomes in India: A Scoping Review
Benavente, M., Geifman, N., Bath, S., & Ahankari, A. (2025) · Anemia · doi:10.1155/anem/2850956 · Cited by 3 · see citing works
“Systematic reviews in South Africa and Sudan reported maternal anemia prevalence ranging from 20% to 40% and 23%–76%, respectively [10, 41].”
Alie, M. S., Gichew, S., & Alemayehu, D. (2024) · BMJ Open · doi:10.1136/bmjopen-2024-086539 · Cited by 1 · see citing works
Saeed, M., Adam, G. K., Hussein, S., AlHabardi, N., & Adam, I. (2024) · Patient Preference and Adherence · doi:10.2147/ppa.s476738 · Cited by 2 · see citing works
Self-citationPrevalence of Anemia during Pregnancy in Pakistan: Meta-analysis
Sehar, B., Moazzam, M., & Jawasreh, M. (2024) · Pioneer Journal of Biostatistics and Medical Research · doi:10.61171/v01.03.26 · Cited by 3
Osoro, C. B., Dellicour, S., Ochodo, E., Young, T., ter Kuile, F. O., Gutman, J., & Hill, J. (2023) · Malaria Journal · doi:10.1186/s12936-023-04698-w · Cited by 3 · see citing works
“Malaria in pregnancy is associated with severe maternal anaemia, maternal mortality, pregnancy loss, preterm delivery, and low birth weight [3–5].”
BackgroundAli, E. H., Alkindi, S., Mohamed, A. O., Awadalla, K., Abdlgadir, O., Adam, G., Magdi, M., Ibrahim, A., & Ghebremeskel, K. (2022) · Mediterranean Journal of Hematology and Infectious Diseases · doi:10.4084/mjhid.2023.002 · Cited by 3
Update of the nutritional situation in the Republic of Sudan
Abusalih, H., & Abusabeib, Z. A. (2020) · Special Issue July-December 2020 · doi:10.51745/najfnr.4.09.s17-s24 · Cited by 3
Prevalence and Risk Factors of Iron Deficiency Anemia among Postpartum Women
Darmawati, D., Syahbandi, S., Fitri, A., & Audina, M. (2020) · Journal of Nursing Care · doi:10.24198/jnc.v3i3.27463 · Cited by 3
Maternal <i>TMPRSS6</i> Gene Polymorphism rs855791SNP in Women with Preeclampsia
Ahmed, Y. I. B., Yagoub, H. S., & Hassan, M. A. (2023) · The Journal of Bioscience and Medicine · doi:10.4236/jbm.2023.111008 · Cited by 3
Prevalence of anemia and its associated factors among pregnant women in Yaqshiid district, Somalia
Ali Mude, A., & Agena, A. M. (2023) · Iraqi Journal of Hematology · doi:10.4103/ijh.ijh_13_23 · Cited by 2 · see citing works
Bereket, T., Tela, F. G., Gebretsadik, G. G., & Beyene, S. A. (2025) · PLoS ONE · doi:10.1371/journal.pone.0318275 · Cited by 2 · see citing works
“Moreover, the result was lower than a study done in Adama [25], Southern Ethiopia [26], Zambia [27], and Sudan [28], it was also lower when compared with the national prevalence of anemia reported in EDHS 2016 [9].”
Prevalence of Anemia and Associated Factors among Pregnant Women in Kigeme Refugee Camp, Rwanda
Musirakumva, J. J. S., Renzaho, J., & Habineza, A. (2024) · Rwanda Journal of Medicine and Health Sciences · doi:10.4314/rjmhs.v7i2.12 · Cited by 2
“This prevalence was greater than the 7.9% anemia prevalence among pregnant women in Northern Ethiopia,[4] but somewhat comparable to those reported in Southern Ethiopia at 23.2%,[15] South America (24%),[16] and in Rwanda (23.5%).”
InfluentialR, E., Tombeg, Z., Hadi, A. J., Sudarman, S., Ishak, S., & Handayani, F. R. (2024) · Journal of Public Health and Pharmacy · doi:10.56338/jphp.v4i1.5041 · Cited by 2
“Examples of dietary restrictions such as a ban on eating red meat, eggs, or other types of food rich in iron can reduce the nutritional intake needed to prevent anemia in pregnant women (3,6,7).”
Backgroundde Andrade, A. M., Ramalho, A. A., Martins, F. A., Valentim-Silva, J. R., & Koifman, R. J. (2023) · Preventive medicine reports · doi:10.1016/j.pmedr.2023.102501 · Cited by 2
“The prevalence of pregnancy-related anemia ranges from 5.4 % in developed nations to over 80 % in developing ones, underlining its severe public health impact (Adam et al., 2018; Fowkes et al., 2018; Srour et al., 2018).”
InfluentialElmugabil, A., Alhabrdi, N. M., Rayis, D. A., Al‐Wutayd, O., & Adam, I. (2022) · Frontiers in Nutrition · doi:10.3389/fnut.2022.933557 · Cited by 3 · see citing works
Self-citationFaris, A., Abdullah, M., & Hadju, V. (2021) · Open Access Macedonian Journal of Medical Sciences · doi:10.3889/oamjms.2021.6924 · Cited by 2
“%) was reported among pregnant women in South America [2].”
BackgroundMensah, M. M., Opoku, S., Babah, R., & Nsiah, E. O. (2025) · International Journal of Gynecology & Obstetrics · doi:10.1002/ijgo.70655 · Cited by 1 · see citing works
Al-Taher, R. H., Abuarab, M. E., Ahmed, A., Helalia, S. A., Hammad, E. A., & Mokhtar, A. (2025) · Applied Water Science · doi:10.1007/s13201-025-02656-2 · Cited by 1 · see citing works
“Sudan possesses 73.5 million hectares of potentially arable land; however, only 26 million hectares are presently cultivated (Adam et al. 2018).”
InfluentialDeterminants of Anemia Among Antenatal Care Attendees in Southwest Ethiopia: A Case‐Control Study
Yosef, T., Gizachew, A., & Shifera, N. (2025) · Health Science Reports · doi:10.1002/hsr2.71290 · Cited by 1
“The findings of this study align with previous research [26, 32 – 34], which consistently reported a strong link between malaria and anemia in pregnant women.”
Prevalence and risk factors for anemia during pregnancy in Sana'a city
Al-Jarrmozi, S. A. A., Almagrami, A. A., Al-Moyed, K. A., Al-Shamahy, H., Al-Haddad, A. M., Al-Arashi, I. A., Al-Dhuraibi, O. M., al-Ghulaibi, Y. M., Al-almohtadi, K. A., Khalil, E. H., et al. (2024) · مجلة جامعة صنعاء للطب والعلوم الصحية · doi:10.59628/jchm.v19i4.1380 · Cited by 1
“For instance, in Ethiopia, the pooled prevalence of anemia among ex-pectant mothers was 31.66% 11 , while in Sudan it was 53.0% [33].”
InfluentialCahyati, P., Pertiwi, S., Mardiah, S. S., Gantini, D., & Rismawan, W. (2024) · Journal of Drug Delivery and Therapeutics · doi:10.22270/jddt.v14i9.6723 · Cited by 1
“There needs to be coordination between agencies 10,17,19,24,28,38,39,42 .”
BackgroundMandar, O., Hassan, B., Abdelbagi, O., Eltayeb, R., Alhabardi, N., & Adam, I. (2022) · Journal of Blood Medicine · doi:10.2147/jbm.s355846 · Cited by 1
“A recent meta-analysis showed that the pooled prevalence of anaemia among pregnant women in Sudan was 53%.(33) In our study, antepartum haemorrhage was suggested as another factor for preoperative anaemia.”
MethodSelf-citationAssessment of Applying Clinical Audit for Pregnant Woman with Iron Deficiency Anemia.
Badry, Y., Mohammed, N. A., & Amein, N. (2020) · Minia Scientific Nursing Journal · doi:10.21608/msnj.2020.188031 · Cited by 1
Adam, A. M. S., Sharfeldeen, S. M. A., Yousif, N. E., Eltigani, S. A., Bakur, A., & Eltayeb, M. M. (2026) · Scientific African · doi:10.1016/j.sciaf.2026.e03709
Yeni Doğurmuş Kadınlarda Demir Desteği Kullanımı ve Anemi Durumu Arasındaki İlişkiyi Tanımlamak
Oruç, B., & Kahraman, S. (2026) · Bandırma Onyedi Eylül Üniversitesi Sağlık Bilimleri ve Araştırmaları Dergisi · doi:10.46413/boneyusbad.1773074
Taye, E. A., Hailie, G. Y., & Kassaw, A. T. (2026) · Journal of Public Health Research · doi:10.1177/22799036261480284
“A total of 14,569 respondents were included in the analysis.”
Association between Helicobacter pylori Infection and Pregnancy-Related Complications
Zefenkey, Z. (2026) · Cihan University-Erbil Scientific Journal · doi:10.24086/cuesj.v10n1y2026.pp63-68
Adam, G. A., AlHabardi, N., & Adam, I. (2026) · International Journal of Women s Health · doi:10.2147/ijwh.s567668
Self-citationFetomaternal Outcome of Pregnant Women with Malaria
Mehwish, Memon, M., Solangi, B., Erum, Raishem, Farzana, Tosheeba, & Maheshwary, N. (2025) · Pakistan Journal of Health Sciences · doi:10.54393/pjhs.v6i7.3124
Maternal knowledge and adherence to iron-rich diet: A multicenter cross-sectional study
Yahaya, J., Bashir, Y. A., Magaji, A. A., Magaji, U., Turaki, A., Shemishere, U., Abdulrauf, M. S., Musa, F., & Anyebe, D. (2025) · Malahayati International Journal of Nursing and Health Science · doi:10.33024/minh.v8i2.637
“This is due to issues such as deficiency in iron and vitamins, poverty, lack of knowledge, and poor dietary habits among others (Adam, Ibrahim, & Elhardello, 2018).”
Ahmed, I., Elmugabil, A., Salih, M., Ali, L., Siniyeh, A., Khalifa, E. H., Hanafy, S., & Adam, I. (2025) · Nigerian Journal of Clinical Practice · doi:10.4103/njcp.njcp_648_24
Self-citationDeterminants of anaemia among pregnant women in Central Region, Ghana
Owusu-Sarpong, A., Anane, A., Sarpong, G., Kusi, R. A. A., Djan, R. O., Adu-Gyamfi, R., Adjin-Tettey, P., & Tetteh, A. K. (2024) · African Journal of Midwifery and Women s Health · doi:10.12968/ajmw.2024.0009
Pregnant Women’s Perception of Gestational Anemia and Iron Supplements in Oman
Al-Marzouqi, Z. K. D., Alsereahi, N. S., & Maqbali, S. K. A. (2024) · Journal of the Oman Medical Association · doi:10.3390/joma1010003
“Furthermore, 31% of gestational anemia cases are in the Middle East and Central Asia [7,8].”
Health-care professionals’ barriers to anemia prevention among pregnant women in Oman
Al-Marzouqi, Z. K. D., Al-Za’abi, R., & Al-Dhoani, A. (2024) · Advances in Biomedical and Health Sciences · doi:10.4103/abhs.abhs_98_23
Knowledge of Pregnant Women on Gestational Anemia Attending Primary Healthcare Institutions in Oman
Al-Marzouqi, Z. K. D., & Zakia, A.-M. (2024) · Global Journal of Health Sciences · doi:10.47604/gjhs.2398 · Cited by 4 · see citing works
“31% of gestational anemia among women above 18 years is identified in the Middle East of Central Asia [7, 8].”
Prevalence of Anaemia among Antenatal Clinic Attendees at A Tertiary Hospital in South West, Nigeria
Irinyenikan, T., Folarin, B. J., Alabi, B., Bade-Adefioye, A., & Sani, I. (2023) · European Journal of Clinical Medicine · doi:10.24018/clinicmed.2023.4.4.274
Severe Megaloblastic Anemia & Thrombocytopenia in Pregnancy: A Case Report
Nugraheni, A. I., Wijayanti, K. R. D., & Manuaba, I. A. R. W. (2023) · European Journal of Medical and Health Sciences · doi:10.24018/ejmed.2023.5.2.1667
Ilboudo, B., SAVADOGO, L. G. B., Traoré, I., Mèda, Z. C., Hien, A., Kinda, M., Hervé, H. I. E. N., Dramaix‐Wilmet, M., & Donnen, P. (2021) · Qeios · doi:10.21203/rs.3.rs-725745/v1 · Cited by 1 · see citing works
“Iron and vitamin deficiencies, hemorrhage, and infections including malaria are the major causes of this blood abnormality [4] .”
BackgroundGünaydın, B., Jovičić, S., & Milinković, N. (2026) · Journal of Medical Biochemistry · doi:10.5937/jomb0-69651
- Authors
- Adam, I., Ibrahim, Y., & Elhardello, O.
- Affiliations
- University of Khartoum (SD)
- University of Tabuk (SA)
- Scarborough General Hospital (GB)
- Corresponding author
- Adam, Ishag
- Venue
- BMC Hematology
- Published
- 2018-11-08
- Volume
- 18
- Issue
- 1
- Pages
- 31-31
- ISSN
- 2052-1839 (ISSN-L)
- PMC
- PMC6225563
- OpenAlex
- W2899558627
- Cited by
- 104
- References
- 45
- Citations by year
- 2026: 6 · 2025: 15 · 2024: 16 · 2023: 19 · 2022: 21 · 2021: 13 · 2020: 8 · 2019: 6
- FWCI
- 1.11
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- BMC Hematology (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Topics
- Health Sciences › Medicine › Hematology › Iron Metabolism and Disorders
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Public Health and Nutrition
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Malaria Research and Control
- Keywords
- anemia in pregnancy, prevalence, iron deficiency anemia, malaria in pregnancy, risk factors, Sudan, maternal health, prenatal care, perinatal outcomes
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