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The Korean Pregnancy Outcome Study (KPOS): Study Design and Participants
Open accessAbstract
BACKGROUND: The Korean Pregnancy Outcome Study (KPOS) was established to investigate the determinants of adverse pregnancy outcomes among Korean women. METHODS: We recruited 4,537 pregnant women between 2013 and 2017 from two tertiary centers located in Seoul, Korea, and a total of 4,195 Korean women met inclusion criteria in the baseline analysis. A range of data on socio-demographics, past medical histories, reproductive information, health-related behaviors, psychological health and clinical information were obtained using interviewer-based questionnaires and clinical assessment at 12, 24, and 36 gestational weeks (GW), delivery and 6-8 weeks postpartum. Blood samplings were performed at 12, 24 and 36 GW, and placental tissues were obtained after delivery. The main outcome of this study was pregnancy-related complications including gestational diabetes mellitus (GDM), gestational hypertension, and screening positive for peripartum depression. Depression was assessed using the Korean version of the Edinburgh Postnatal Depression Scale, and a score of ≥10 indicated a positive screen for depression. RESULTS: Among 4,195 eligible pregnant women with a median age of 33.0 years, 3,565 (85.0%) pregnancy outcomes were available in this study, including 30 miscarriages, 16 stillbirths, and 3,519 deliveries. Mean gestational age was 38.8 GW, and mean birth weight was 3,236 gram. The prevalence of pregnancy complications of GDM, hypertensive disorders, and screening positive of depression during pregnancy and postpartum was 7.0%, 1.4%, 27.8%, and 16.6%, respectively. CONCLUSIONS: We designed KPOS to identify the determinants of pregnancy-related outcomes, and it may provide effective strategies for the prevention of pregnancy complications in Korean pregnant women.
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“Our previous study further strengthened the evidence supporting the effectiveness of exercise in GDM prevention, demonstrating a significantly lower risk of GDM among women who participated in pre-pregnancy strength training.19”
From Pre-Pregnancy Physical Activity Lowers Risk of Diet-Controlled but Not Insulin-Treated Gestational Diabetes Mellitus: A Korean Prospective Cohort Study (2026) · cites this paper as [19]
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Citations
Cites
Detection of Postnatal Depression: Development of the 10-item Edinburgh Postnatal Depression Scale
Cox, J. L., Holden, J. M., & Sagovsky, R. (1987) · British Journal of Psychiatry · doi:10.1192/bjp.150.6.782 · Cited by 14,183
International Association of Diabetes and Pregnancy Study Groups Consensus Panel (2010) · Diabetes Care · doi:10.2337/dc09-1848 · Cited by 5,390
Classification and diagnosis of diabetes mellitus and other categories of glucose intolerance.
National Diabetes Data Group (1979) · Diabetes · doi:10.2337/diab.28.12.1039 · Cited by 4,909
Weight Gain During Pregnancy: Reexamining the Guidelines
Rasmussen, K. M., & Yaktine, A. L. (2009) · Cited by 4,052
(2000) · American Journal of Obstetrics and Gynecology · doi:10.1067/mob.2000.107928 · Cited by 3,278
Metzger, B. E., Gabbe, S. G., Persson, B., Lowe, L. P., Dyer, A. R., Oats, J. J. N., & Buchanan, T. A. (2010) · Diabetes Care · doi:10.2337/dc10-0719 · Cited by 1,888
Population and Housing Census.
Tobago (2011) · Cited by 1,384
Increasing Prevalence of Gestational Diabetes Mellitus
Ferrara, A. (2007) · Diabetes Care · doi:10.2337/dc07-s206 · Cited by 1,171
Preconceptional and maternal obesity: epidemiology and health consequences
Poston, L., Caleyachetty, R., Cnattingius, S., Corvalán, C., Uauy, R., Herring, S., & Gillman, M. W. (2016) · The Lancet Diabetes & Endocrinology · doi:10.1016/s2213-8587(16)30217-0 · Cited by 1,111
Shorey, S., Chee, C. Y. I., Ng, E. D., Chan, Y. H., Tam, W. W. S., & Chong, Y. S. (2018) · Journal of Psychiatric Research · doi:10.1016/j.jpsychires.2018.08.001 · Cited by 1,055
Fetal programming and adult health
Godfrey, K. M., & Barker, D. J. P. (2001) · Public Health Nutrition · doi:10.1079/phn2001145 · Cited by 987
Impact of Maternal Age on Obstetric Outcome
Cleary‐Goldman, J., Malone, F. D., Vidaver, J., Ball, R. H., Nyberg, D. A., Comstock, C. H., Saade, G. R., Eddleman, K. A., Klugman, S. D., Dugoff, L., et al. (2005) · Obstetrics and Gynecology · doi:10.1097/01.aog.0000158118.75532.51 · Cited by 867
Advanced maternal age and adverse pregnancy outcomes: A systematic review and meta-analysis
Lean, S. C., Derricott, H., Jones, R. L., & Heazell, A. E. P. (2017) · PLOS ONE · doi:10.1371/journal.pone.0186287 · Cited by 737
Rich-Edwards, J. W., Kleinman, K., Abrams, A., Harlow, B. L., McLaughlin, T. J., Joffe, H., & Gillman, M. W. (2006) · Journal of Epidemiology & Community Health · doi:10.1136/jech.2005.039370 · Cited by 642
Umesawa, M., & Kobashi, G. (2016) · Hypertension Research · doi:10.1038/hr.2016.126 · Cited by 584
The risks associated with pregnancy in women aged 35 years or older
Jolly, M. (2000) · Human Reproduction · doi:10.1093/humrep/15.11.2433 · Cited by 508
Advanced maternal age and pregnancy outcomes: a multicountry assessment
Laopaiboon, M., Lumbiganon, P., Intarut, N., Mori, R., Ganchimeg, T., Vogel, J. P., Souza, J. P., & Gülmezoglu, A. M. (2014) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/1471-0528.12659 · Cited by 490
Delayed Childbearing and the Outcome of Pregnancy
Berkowitz, G. S., Skovron, M. L., Lapinski, R. H., & Berkowitz, R. L. (1990) · New England Journal of Medicine · doi:10.1056/nejm199003083221004 · Cited by 433
The Perinatal Effects of Delayed Childbearing
Joseph, K. S., Allen, A. C., Dodds, L., Turner, L. A., Scott, H., & Liston, R. (2005) · Obstetrics & Gynecology · doi:10.1097/01.aog.0000163256.83313.36 · Cited by 400
Elevated risks of pregnancy complications and adverse outcomes with increasing maternal age
Luke, B., & Brown, M. B. (2007) · Human Reproduction · doi:10.1093/humrep/del522 · Cited by 375
Maternal Age and Risk of Labor and Delivery Complications
Cavazos‐Rehg, P. A., Krauss, M. J., Spitznagel, E. L., Bommarito, K. M., Madden, T. E., Olsen, M. A. A., Subramaniam, H., Peipert, J. F., & Bierut, L. J. (2014) · Maternal and Child Health Journal · doi:10.1007/s10995-014-1624-7 · Cited by 358
Effects of Prenatal Exposure to the Dutch Famine on Adult Disease in Later Life: An Overview
Roseboom, T. J., van der Meulen, J., Ravelli, A. C. J., Osmond, C., Barker, D. J. P., & Bleker, O. P. (2001) · Twin Research · doi:10.1375/1369052012605 · Cited by 356
Nguyen, C. L., Pham, N. M., Binns, C. W., Duong, D., & Lee, A. H. (2018) · Journal of Diabetes Research · doi:10.1155/2018/6536974 · Cited by 302
Advanced maternal age and adverse perinatal outcome: A review of the evidence
Carolan, M. C., & Frankowska, D. (2010) · Midwifery · doi:10.1016/j.midw.2010.07.006 · Cited by 277
East Asian Childbearing Patterns and Policy Developments
Frejka, T., Jones, G. W., & Sardon, J. (2010) · Population and Development Review · doi:10.1111/j.1728-4457.2010.00347.x · Cited by 226 · cited 1×
“2,5,7 Between 1995 and 2016, the average age of women at fi rst childbirth rapidly increased from 26.5 to 31.4 years among Korean women, whereas the Organisation for Economic Co-operation and Development average was 28.9 years old in 2016.”
InfluentialIncreasing prevalence of gestational diabetes mellitus in Chinese women from 1999 to 2008
Zhang, F., Dong, L., Zhang, C. P., Li, B., Wen, J.-J., Gao, W. Y., Sun, S., Lv, F., Tian, H., Tuomilehto, J. O., et al. (2010) · Diabetic Medicine · doi:10.1111/j.1464-5491.2010.03205.x · Cited by 195
Jones, G. W., & Gubhaju, B. (2009) · Asian Population Studies · doi:10.1080/17441730903351487 · Cited by 185
Effects of Prenatal Exposure to the Dutch Famine on Adult Disease in Later Life: An Overview
Roseboom, T. J., van der Meulen, J., Ravelli, A. C. J., Osmond, C., Barker, D. J. P., & Bleker, O. P. (2001) · Twin Research · doi:10.1375/twin.4.5.293 · Cited by 181
Lieshout, R. J. V., Taylor, V. H., & Boyle, M. H. (2011) · Obesity Reviews · doi:10.1111/j.1467-789x.2010.00850.x · Cited by 178
Waldenström, U., Cnattingius, S., Vixner, L., & Norman, M. (2016) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/1471-0528.14368 · Cited by 176
Maternal Age and Prevalence of Gestational Diabetes Mellitus
Lao, T. T., Ho, L.-F., Chan, B. C. P., & Leung, W.-C. (2006) · Diabetes Care · doi:10.2337/diacare.29.04.06.dc05-2568 · Cited by 138
Bateman, B. T., & Simpson, L. L. (2006) · American Journal of Obstetrics and Gynecology · doi:10.1016/j.ajog.2005.08.038 · Cited by 91
Lamminpää, R., Vehviläinen-Julkunen, K., Gissler, M., Selander, T., & Heinonen, S. (2016) · Obesity Research & Clinical Practice · doi:10.1016/j.orcp.2015.05.008 · Cited by 61
Factors related to low birth rate among married women in Korea
Song, J., Ahn, J., Lee, S.-K., & Roh, E. H. (2018) · PLoS ONE · doi:10.1371/journal.pone.0194597 · Cited by 61
Self-citationUltra-low fertility in South Korea: The role of the tempo effect
Yoo, S. H., & Sobotka, T. (2018) · Demographic Research · doi:10.4054/demres.2018.38.22 · Cited by 60
Prevalence of Gestational Diabetes Mellitus in Korea: A National Health Insurance Database Study
Koo, B. K., Lee, J.-H., Kim, J., Jang, E. J., & Lee, C. (2016) · PLoS ONE · doi:10.1371/journal.pone.0153107 · Cited by 56
Kim, H.-E., Song, I. G., Chung, S.-H., Choi, Y., & Bae, C.-W. (2019) · Journal of Korean Medical Science · doi:10.3346/jkms.2019.34.e34 · Cited by 53
Clinical Application of Korean Version of Edinburgh Postnatal Depression Scale
Kim, Y. K., Hur, J., Kim, K. H., Oh, K. S., & Shin, Y. C. (2008) · 신경정신의학 · Cited by 46
Choe, S., Jun, Y.-B., & Kim, S. (2018) · BMC Pregnancy and Childbirth · doi:10.1186/s12884-018-1982-z · Cited by 34
Perinatal outcome of twin pregnancies according to maternal age
Lee, Y.-J., Kim, M., Kim, Y., Sung, J., Choi, S., Oh, S., Roh, C., & Kim, J.-H. (2019) · Obstetrics & Gynecology Science · doi:10.5468/ogs.2019.62.2.93 · Cited by 21
Self-citationOh, Y., & Bae, J. (2019) · Journal of Preventive Medicine and Public Health · doi:10.3961/jpmph.18.247 · Cited by 17
Parents are rapidly getting older in South Korea
Sohn, K. (2017) · Human Fertility · doi:10.1080/14647273.2017.1279352 · Cited by 15
Park, H., Lee, S. H., Hyun, D. C., Kim, I. H., Jun, H. S., Lee, K. J., Song, S. A., Park, H. R., Chung, C. J., & Lee, C. N. (2006) · Obstetrics & Gynecology Science · Cited by 8
Self-citationUkah, U. V., Magee, L. A., Payne, B. A., Hutcheon, J. A., & von Dadelszen, P. (2018) · Pregnancy Hypertension · doi:10.1016/j.preghy.2018.08.369 · Cited by 5
김현경, & 김희숙 (2017) · JOURNAL OF THE KOREAN SOCIETY OF MATERNAL AND CHILD HEALTH · doi:10.21896/jksmch.2017.21.3.199 · Cited by 1
이경희 (2020) · Journal of Korean society of Dental Hygiene · doi:10.13065/jksdh.20200027 · Cited by 1
Lee, S. Y., & Ryu, H. M. (2016) · European Psychiatry · doi:10.1016/j.eurpsy.2016.01.1500 · Cited by 1
Self-citation
Research works printed but not linked: 2
- 26. Park HJ, Lee SH, Cha DH, et al. Pregnancy outcomes in women aged 35 and older. Korean Society of Obstetrics and Cynecology. 2006;49:2066–2074.
- 28. Kil K, Lee GSR, Kwon JY, et al. Impact of maternal age of 40 years or older on pregnancy outcomes. Korean J Perinatol. 2007;18:125–130.
Cited by
Sorted by citations
Choi, H., Lim, J.-Y., Lim, N.-K., Ryu, H. M., Kwak, D. W., Chung, J. H., Park, H. J., & Park, H. (2021) · International Journal of Obesity · doi:10.1038/s41366-021-00946-8 · Cited by 53
Self-citationShim, S. H., Lee, S. Y., Jung, I., Heo, S., Han, Y. J., Kwak, D. W., Kim, M. H., Park, H. J., Chung, J. H., Lim, J. H., et al. (2024) · Journal of Korean Medical Science · doi:10.3346/jkms.2024.39.e31 · Cited by 31
Self-citationMaternal Anemia during the First Trimester and Its Association with Psychological Health
Kwak, D.-W., Kim, S., Lee, S. Y., Kim, M. H., Park, H.-J., Han, Y. J., Cha, D. H., Kim, M. Y., Chung, J. H., Park, B., et al. (2022) · Nutrients · doi:10.3390/nu14173505 · Cited by 20
Self-citationLim, J. H., Kim, M. H., Han, H.-J., Yang, S. J., Kim, M.-G., Lee, H. J., Han, Y. J., Chung, J. H., Kwak, D. W., Yang, S., et al. (2025) · Diabetes & Metabolism Journal · doi:10.4093/dmj.2024.0280 · Cited by 4
Self-citationKim, O., Kim, B., Kim, S., Cho, E., Lee, H. Y., Cha, C., Bae, N., Kim, M., Lee, D. H., Chavarro, J. E., et al. (2023) · Occupational and Environmental Medicine · doi:10.1136/oemed-2022-108609 · Cited by 4
Self-citation
Metadata
- Authors
- Choi, H., Kwak, D. W., Kim, M. H., Lee, S. Y., Chung, J. H., Han, Y. J., Park, H. J., Kim, M. Y., Cha, D. H., Koo, S., Lim, J.-Y., Ryu, H. M., & Park, H.-Y.
- Affiliations
- Korea National Institute of Health (KR)
- Ajou University (KR)
- MizMedi Hospital (KR)
- Myongji Hospital (KR)
- Asan Medical Center (KR)
- CHA University (KR)
- CHA University Bundang Medical Center (KR)
- ORCID
- Venue
- Journal of Epidemiology
- Publisher
- Japan Epidemiological Association
- Published
- 2021-06-05
- Volume
- 31
- Issue
- 6
- Pages
- 392-400
- ISSN
- 0917-5040 (ISSN-L)
- 1349-9092
- PMC
- PMC8126675
- OpenAlex
- W3037760688
- Cited by
- 15
- References
- 46
- Citations by year
- 2026: 5 · 2025: 3 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 2
- FWCI
- 1.57
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Journal of Epidemiology (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- AJOU Open Repository (Ajou University) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Centers for Disease Control and Prevention
- Korea Centers for Disease Control and Prevention (2018-NG001-00, 2016-ER6306-01, 2016-ER6306-00, 2013-E63009-00)
- Topics
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Maternal and Neonatal Healthcare
- Health Sciences › Medicine › Obstetrics and Gynecology › Gestational Diabetes Research and Management
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Maternal Mental Health During Pregnancy and Postpartum
- Keywords
- adverse pregnancy outcomes, pregnancy complications, gestational diabetes mellitus, gestational hypertension, hypertensive disorders of pregnancy, perinatal depression, postpartum depression screening, miscarriage, stillbirth, Korean pregnant women, birth weight, placental tissue
- MeSH terms
- Adult, Female, Humans, Pregnancy, Pregnancy Complications, Pregnancy Outcome, Risk Factors, Cohort Studies, Young Adult, Republic of Korea
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