The burden of suicidal ideation across Europe: a cross-sectional survey in five countries
Open accessAbstract
Background: Suicidal ideation (SI) is an associated risk of depression, affecting 30–40% of the depressed population. However, there is a paucity of studies investigating the impact of SI in Europe. This retrospective observational study examined the burden of SI among adults with major depressive disorder (MDD) in the 2017 National Health and Wellness Survey in five European countries: France, Germany, Italy, Spain, and the UK. Methods: Bivariate analyses evaluated group differences between respondents with MDD with and without SI according to demographic characteristics, self-reported health-related quality of life, work productivity and activity impairment (WPAI), and healthcare resource utilization (HRU). Generalized linear models examined group differences country-wise, after controlling for relevant confounders. Results: Among 52,060 respondents, 3,308 individuals were diagnosed with MDD, comprising SI (n=905) and non-SI (nSI) (n=2403) patients. Adjusted differences (ADs), compared to the general population, were observed using the Medical Outcomes Study Short Form Survey (SF-12v2) mental component summary scores (AD: SI=−20.02, nSI=−10.77), physical component summary scores (AD: SI=−4.49, nSI=−2.50), and EuroQoL-5 Dimensions (AD: SI=−0.34, nSI=−0.15) (for all, p <0.001). Significantly greater WPAI and higher HRU were associated with SI compared to nSI. Conclusion: The results illustrate the unique impact of SI within the MDD population and the need to reduce the burden. Keywords: burden, healthcare resource utilization, major depressive disorder, suicidal ideation, work productivity and activity impairment
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Patients with MDD and suicidal ideation have significantly worse quality of life, high healthcare resource use, and greater productivity loss and activity impediment than patients without suicidal ideation and the general population.
“A recent study showed that patients with MDD and suicidal ideation (vs. patients without suicidal ideation and the general population) had significantly worse quality of life, high healthcare resource use, and greater productivity loss and activity impediment [17].”
From High depression symptomatology and mental pain characterize suicidal psychiatric patients (2022) · cites this paper as [17]
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Cites
Charlson, M. E., Pompei, P., Ales, K. L., & MacKenzie, C. R. (1987) · Journal of Chronic Diseases · doi:10.1016/0021-9681(87)90171-8 · Cited by 49,742 · see citing works
The PHQ-9: Validity of a brief depression severity measure
Kroenke, K., Spitzer, R. L., & Williams, J. B. W. (2001) · Journal of General Internal Medicine · doi:10.1046/j.1525-1497.2001.016009606.x · Cited by 44,910 · see citing works
Diagnostic and Statistical Manual of Mental Disorders
(2012) · Springer eBooks · doi:10.1007/springerreference_121117 · Cited by 20,769 · see citing works
Development and preliminary testing of the new five-level version of EQ-5D (EQ-5D-5L)
Herdman, M., Gudex, C., Lloyd, A., Janssen, M., Kind, P., Parkin, D., Bonsel, G., & Badia, X. (2011) · Quality of Life Research · doi:10.1007/s11136-011-9903-x · Cited by 9,795 · cited 1× · see citing works
“HRQoL was measured by the Medical Outcomes Study 12-item Short Form Survey version 2 (SF-12v2).(28,29) The instrument is designed to report on eight health domains (physical functioning, physical role limitations, bodily pain, general health, vitality, social functioning, emotional role limitations, and mental health).”
MethodVos, T., Allen, C., Arora, M., Barber, R. M., Bhutta, Z. A., Brown, A., Carter, A., Casey, D. C., Charlson, F. J., Chen, A. Z., et al. (2016) · The Lancet · doi:10.1016/s0140-6736(16)31678-6 · Cited by 7,253 · see citing works
The Validity and Reproducibility of a Work Productivity and Activity Impairment Instrument
Reilly, M. C., Zbrozek, A. S., & Dukes, E. M. (1993) · PharmacoEconomics · doi:10.2165/00019053-199304050-00006 · Cited by 3,071 · see citing works
Cross-national prevalence and risk factors for suicidal ideation, plans and attempts
Nock, M. K., Borges, G., Bromet, E. J., Alonso, J., Angermeyer, M., Beautrais, A., Bruffaerts, R., Chiu, W. T., de Girolamo, G., Gluzman, S., et al. (2008) · British Journal of Psychiatry · doi:10.1192/bjp.bp.107.040113 · Cited by 2,654 · see citing works
The ESEMeD/MHEDEA 2000 Investigators, Alonso, J., Angermeyer, M. C., Bernert, S., Bruffaerts, R., Brugha, T. S., Bryson, H., de Girolamo, G., de Graaf, R., Demyttenaere, K., et al. (2004) · Acta Psychiatrica Scandinavica · doi:10.1111/j.1600-0047.2004.00327.x · Cited by 1,825 · see citing works
Screening for Depression in Adults: US Preventive Services Task Force Recommendation Statement
Siu, A. L., and the US Preventive Services Task Force (USPSTF), Bibbins-Domingo, K., Grossman, D. C., Baumann, L. C., Davidson, K. W., Ebell, M., García, F. A. R., Gillman, M., Herzstein, J., et al. (2016) · JAMA · doi:10.1001/jama.2015.18392 · Cited by 1,407 · see citing works
The Estimation of a Preference-Based Measure of Health From the SF-12
Brazier, J. E., & Roberts, J. (2004) · Medical Care · doi:10.1097/01.mlr.0000135827.18610.0d · Cited by 1,294 · see citing works
The Economic Burden of Depression in the United States: How Did It Change Between 1990 and 2000?
Greenberg, P. E., Kessler, R. C., Birnbaum, H. G., Leong, S. A., Lowe, S. W., Berglund, P. A., & Corey-Lisle, P. K. (2003) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.v64n1211 · Cited by 1,280 · see citing works
Ferrari, A. J., Somerville, A. J., Baxter, A. J., Norman, R., Patten, S. B., Vos, T., & Whiteford, H. A. (2013) · Psychological Medicine · doi:10.1017/s0033291712001511 · Cited by 1,230 · see citing works
Alonso, J., Angermeyer, M. C., & Lépine, J. P. (2004) · Acta Psychiatrica Scandinavica · doi:10.1111/j.1600-0047.2004.00325.x · Cited by 758 · see citing works
Risk factors for suicidality in Europe: Results from the ESEMED study
Bernal, M., Haro, J. M., Bernert, S., Brugha, T., de Graaf, R., Bruffaerts, R., Lépine, J. P., de Girolamo, G., Vilagut, G., Gasquet, I., et al. (2007) · Journal of Affective Disorders · doi:10.1016/j.jad.2006.09.018 · Cited by 565 · see citing works
Screening for anxiety and depression: reassessing the utility of the Zung scales
Dunstan, D. A., Scott, N., & Todd, A. K. (2017) · BMC Psychiatry · doi:10.1186/s12888-017-1489-6 · Cited by 436 · see citing works
Suicide and Suicidal Attempts in the United States: Costs and Policy Implications
Shepard, D. S., Gurewich, D., Lwin, A. K., Reed, G. A., & Silverman, M. M. (2016) · Suicide and Life-Threatening Behavior · doi:10.1111/sltb.12225 · Cited by 413 · see citing works
Cipriani, A., Furukawa, T. A., Salanti, G., Chaimani, A., Atkinson, L. Z., Ogawa, Y., Leucht, S., Ruhe, H. G., Turner, E. H., Higgins, J. P. T., et al. (2018) · Focus · doi:10.1176/appi.focus.16407 · Cited by 328 · see citing works
Suicidal Behaviour in Mood Disorders—Who, When, and Why?
Isometsä, E. T. (2014) · The Canadian Journal of Psychiatry · doi:10.1177/070674371405900303 · Cited by 311 · see citing works
Depressive disorders and suicide: Epidemiology, risk factors, and burden
Miret, M., Ayuso‐Mateos, J. L., Sánchez‐Moreno, J., & Vieta, E. (2013) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2013.01.008 · Cited by 200 · see citing works
Smoking and Suicide: A Meta-Analysis
Poorolajal, J., & Darvishi, N. (2016) · PLoS ONE · doi:10.1371/journal.pone.0156348 · Cited by 190 · see citing works
Zou, L., Yeung, A., Li, C., Wei, G.-X., Chen, K. W., Kinser, P. A., Chan, J. S. M., & Ren, Z. (2018) · Journal of Clinical Medicine · doi:10.3390/jcm7080195 · Cited by 188 · see citing works
The impact of work environment on mood disorders and suicide: Evidence and implications
Woo, J., & Postolache, T. T. (2008) · International Journal on Disability and Human Development · doi:10.1515/ijdhd.2008.7.2.185 · Cited by 182 · see citing works
The Mood Disorder Questionnaire
Hirschfeld, R. M. A. (2002) · The Primary Care Companion For CNS Disorders · doi:10.4088/pcc.v04n0104 · Cited by 129 · see citing works
Miret, M., Caballero, F. F., Huerta-Ramírez, R., Moneta, M. V., Olaya, B., Chatterji, S., Haro, J. M., & Ayuso‐Mateos, J. L. (2014) · Journal of Affective Disorders · doi:10.1016/j.jad.2014.03.045 · Cited by 104 · see citing works
Serafini, G., Pompili, M., Belvederi Murri, M., Respino, M., Ghio, L., Girardi, P., Fitzgerald, P. B., & Amore, M. (2015) · Neuropsychobiology · doi:10.1159/000381351 · Cited by 101 · see citing works
Suicide in Stroke Survivors: Epidemiology and Prevention
Pompili, M., Venturini, P., Lamis, D. A., Giordano, G., Serafini, G., Murri, M. B., Amore, M., & Girardi, P. (2014) · Drugs & Aging · doi:10.1007/s40266-014-0233-x · Cited by 87 · see citing works
Girardi, P., Pompili, M., Innamorati, M., Mancini, M., Serafini, G., Mazzarini, L., CASALE, A. D., Tatarelli, R., & Baldessarini, R. J. (2009) · Human Psychopharmacology Clinical and Experimental · doi:10.1002/hup.1005 · Cited by 86 · see citing works
Li, H.-Y., Luo, X.-N., Ke, X.-Y., Dai, Q., Zheng, W., Zhang, C., Cassidy, R., Soares, J., Zhang, X.-Y., & Ning, Y.-P. (2017) · PLoS ONE · doi:10.1371/journal.pone.0186143 · Cited by 85 · see citing works
van Spijker, B. A. J., Majo, M. C., Smit, F., van Straten, A., & Kerkhof, A. J. F. M. (2012) · Journal of Medical Internet Research · doi:10.2196/jmir.1966 · Cited by 82 · see citing works
Agomelatine, a novel intriguing antidepressant option enhancing neuroplasticity: A critical review
Pompili, M., Serafini, G., Innamorati, M., Venturini, P., Fusar‐Poli, P., Sher, L., Amore, M., & Girardi, P. (2013) · The World Journal of Biological Psychiatry · doi:10.3109/15622975.2013.765593 · Cited by 78 · see citing works
Gauthier, G., Guérin, A., Zhdanava, M., Jacobson, W., Nomikos, G., Merikle, E., François, C., & Perez, V. (2017) · BMC Psychiatry · doi:10.1186/s12888-017-1385-0 · Cited by 70 · see citing works
Jonas, J. B., Nangia, V. B., Rietschel, M., Paul, T., Behere, P. B., & Panda‐Jonas, S. (2014) · PLoS ONE · doi:10.1371/journal.pone.0113550 · Cited by 52 · see citing works
Fairweather-Schmidt, A. K., Batterham, P. J., Butterworth, P., & Nada-Raja, S. (2016) · Journal of Affective Disorders · doi:10.1016/j.jad.2016.05.067 · Cited by 51 · see citing works
Woo, J., Jeon, H. J., Noh, E., Kim, H., Lee, S. W., Lee, K. K., Kim, S., & Hong, J. P. (2014) · Health and Quality of Life Outcomes · doi:10.1186/s12955-014-0188-y · Cited by 49 · see citing works
Steptoe, A., Wikman, A., Molloy, G. J., & Kaski, J. C. (2012) · BMJ Open · doi:10.1136/bmjopen-2011-000551 · Cited by 44 · see citing works
Depression in Working Adults: Comparing the Costs and Health Outcomes of Working When Ill
Cocker, F., Nicholson, J. M., Graves, N., Oldenburg, B. F., Palmer, A. J., Martin, A. J., Scott, J. L., Venn, A., & Sanderson, K. A. (2014) · PLoS ONE · doi:10.1371/journal.pone.0105430 · Cited by 39 · see citing works
Fond, G. B., Llorca, P., Boucékine, M., Zendjidjian, X. Y., Brunel, L., Lançon, C., Auquier, P., & Boyer, L. (2016) · Scientific Reports · doi:10.1038/srep20256 · Cited by 37 · see citing works
Lutz, J., Morton, K., Turiano, N. A., & Fiske, A. (2016) · The Journals of Gerontology Series B · doi:10.1093/geronb/gbw019 · Cited by 37 · see citing works
Serafini, G., Pompili, M., Innamorati, M., Iacorossi, G., Cuomo, I., Vista, M. D., Lester, D., Biase, L. D., Girardi, P., & Tatarelli, R. (2010) · The Primary Care Companion to The Journal of Clinical Psychiatry · doi:10.4088/pcc.09m00916gry · Cited by 36 · see citing works
Hardt, J., Bernert, S., Matschinger, H., Angermeier, M. C., Vilagut, G., Bruffaerts, R., de Girolamo, G., de Graaf, R., Haro, J. M., Kovess–Masféty, V., et al. (2015) · Journal of Affective Disorders · doi:10.1016/j.jad.2014.12.044 · Cited by 33 · see citing works
Oltedal, L., Keßler, U., Ersland, L., Grüner, R., Andreassen, O. A., Haavik, J., Hoff, P. I., Hammar, Å., Dale, A. M., Hugdahl, K., et al. (2015) · BMC Psychiatry · doi:10.1186/s12888-015-0477-y · Cited by 31 · see citing works
Ballard, E. D., Cwik, M. F., Storr, C. L., Goldstein, M. A., Eaton, W. W., & Wilcox, H. C. (2014) · General Hospital Psychiatry · doi:10.1016/j.genhosppsych.2014.03.004 · Cited by 28 · see citing works
Health-related Quality of Life and Mental Health of Elderly by Occupational Status.
Kwak, Y., & Kim, Y. (2017) · Europe PMC (PubMed Central) · Cited by 23 · see citing works
Vietri, J., Otsubo, T., Montgomery, W., Tsuji, T., & Harada, E. (2015) · Neuropsychiatric Disease and Treatment · doi:10.2147/ndt.s71768 · Cited by 20 · see citing works
Ju, Y. J., Han, K., Lee, T.-H., Kim, W., Park, J. H., & Park, E. (2016) · BMC Public Health · doi:10.1186/s12889-016-2940-1 · Cited by 20 · see citing works
Health-related quality of life in a population-based sample of men with long-term mental symptoms
Saharinen, T., Hintikka, J. J., NISKANEN, L. K., Kylmä, J., Honkalampi, K. M., Nikkonen, M., Haatainen, K. M., Koivumaa-Honkanen, H. T., & Viinamäki, H. T. (2008) · Nordic Journal of Psychiatry · doi:10.1080/08039480801962921 · Cited by 7 · see citing works
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Cai, H. X., Jin, Y., Liu, S., Zhang, Q., Zhang, L., Cheung, T. C. C., Balbuena, L., & Xiang, Y. (2021) · Journal of Affective Disorders · doi:10.1016/j.jad.2021.05.115 · Cited by 146 · see citing works
Su, Y., Ye, C., Qin, X., & Si, T. (2023) · Journal of Affective Disorders · doi:10.1016/j.jad.2023.08.106 · Cited by 71 · see citing works
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Pompili, M., Innamorati, M., Erbuto, D., Luciano, M., Sampogna, G., Abbate-Daga, G., Barlati, S., Carmassi, C., Castellini, G., De Fazio, P., et al. (2022) · European Psychiatry · doi:10.1192/j.eurpsy.2022.2312 · Cited by 54 · see citing works
Benson, C. J., Singer, D., Carpinella, C. M., Shawi, M., & Alphs, L. D. (2021) · Neuropsychiatric Disease and Treatment · doi:10.2147/ndt.s229530 · Cited by 39 · see citing works
Borentain, S., Nash, A. I., Dayal, R., & DiBernardo, A. (2020) · BMC Psychiatry · doi:10.1186/s12888-020-02758-y · Cited by 39 · see citing works
Fugger, G., Bartova, L., Fabbri, C., Fanelli, G., Dold, M., Swoboda, M. M. M., Kautzky, A., Zohar, J., Souery, D., Mendlewicz, J., et al. (2022) · European Archives of Psychiatry and Clinical Neuroscience · doi:10.1007/s00406-021-01368-3 · Cited by 25 · see citing works
Guo, Y., Jiang, X., Jia, L., Zhu, Y., Han, X., Wu, Y., Liu, W., Zhao, W., Zhu, H., Wang, D., et al. (2022) · NeuroImage Clinical · doi:10.1016/j.nicl.2023.103403 · Cited by 18 · see citing works
Voelker, J., Cai, Q., Kuvadia, H., Daly, E., Connolly, N., Pesa, J. A., Sheehan, J. J., & Wilkinson, S. T. (2021) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.20m13842 · Cited by 14 · see citing works
Jamieson, C., Canuso, C. M., Ionescu, D. F., Lane, R., Qiu, X., Rozjabek, H., Molero, P., & Fu, D. (2023) · Quality of Life Research · doi:10.1007/s11136-023-03451-9 · Cited by 13 · see citing works
Jaffe, D. H., Balkaran, B. L., Yue, L., Mulhern-Haughey, S., & Anjo, J. (2021) · BMC Psychiatry · doi:10.1186/s12888-021-03511-9 · Cited by 13 · see citing works
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Gloger, S., Vöhringer, P. A., Martínez, P., Chacón, M. V., Cáceres, C., de Medina, D. D., Cottin, M., & Behn, A. J. (2021) · Depression and Anxiety · doi:10.1002/da.23144 · Cited by 9 · see citing works
Hensel, L. M., & Teismann, T. (2025) · Journal of Affective Disorders · doi:10.1016/j.jad.2025.120213 · Cited by 5 · see citing works
Neslusan, C. A., Chen, Y., Sharma, M., & Voelker, J. (2022) · Journal of Medical Economics · doi:10.1080/13696998.2022.2133321 · Cited by 5 · see citing works
Pompili, M., Dell’Osso, B. M., Rosso, G., Amore, M., Bellomo, A., Mautone, A., Pilotto, E., Ramacciotti, S., Scardigli, M. I., Ascione, G., et al. (2023) · Comprehensive Psychiatry · doi:10.1016/j.comppsych.2023.152430 · Cited by 5 · see citing works
Rihmer, Z., Döme, P., Szekeres, G., Fehér, L., Kunovszki, P., Gimesi-Országh, J., Cai, Q., Khoury, A. C. E., & Bitter, I. (2024) · Journal of Affective Disorders · doi:10.1016/j.jad.2024.12.014 · Cited by 4 · see citing works
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Denee, T., Kerr, C., Richards, S., Dennis, N., Foix-Colonier, A., Fischer, C., & Larkin, F. (2024) · BMC Psychiatry · doi:10.1186/s12888-024-05961-3 · Cited by 2 · see citing works
“In the cross-sectional survey in five European countries, the group of patients with suicidal ideation showed a higher HCRU with statistically significant differences compared to both the non-suicidal ideation group and the general population [19].”
BackgroundResultSelf-citationvan der Spek, N., Junus, A., van Ballengooijen, W., Wiers, R. W. H. J., & Bockting, C. (2025) · Journal of Affective Disorders · doi:10.1016/j.jad.2025.119844 · Cited by 3 · see citing works
Bockting, C., Bosmans, G., Bergers, N., Gavan, L., Hiligsmann, M., de Beurs, D., Molenberghs, G., Wijnen, B., Lokkerbol, J., & van der Spek, N. (2024) · Trials · doi:10.1186/s13063-024-08499-7 · Cited by 1 · see citing works
“Suicidal ideation can result in suicide attempts and fatal suicide, but is in itself also very burdensome for individuals [8, 9].”
BackgroundMeurk, C., Janca, E. K., Oltvolgyi, C. G., McKay, D., Lane, J., Wallace, D., Khoo, A., Waterson, E., & Heffernan, E. (2025) · BMJ Open · doi:10.1136/bmjopen-2025-106771 · Cited by 1 · see citing works
Denee, T. R., Kerr, C., Richards, S., Dennis, N., Colonier, A. F., Fischer, C., & Larkin, F. (2022) · SSRN Electronic Journal · doi:10.2139/ssrn.4181707 · Cited by 1 · see citing works
Self-citationHusky, M. M., Léon, C., du Roscoät, E., & Vasiliadis, H. (2023) · International Journal of Social Psychiatry · doi:10.1177/00207640221148320
Cenkner, D. P., Stevens, S., Lee, S., & Zalta, A. K. (2025) · Archives of Suicide Research · doi:10.1080/13811118.2025.2573839
Jaffe, D. H., Balkaran, B. L., Yue, L., Mulhern-Haughey, S., & Anjo, J. (2021) · Figshare · doi:10.6084/m9.figshare.16969159
Denee, T., Kerr, C., Richards, S., Dennis, N., Foix-Colonier, A., Fischer, C., & Larkin, F. (2024) · Figshare · doi:10.6084/m9.figshare.26825477
Self-citationKayser, S., Bewernick, B. H., & Schläpfer, T. E. (2026) · Journal of Affective Disorders Reports · doi:10.1016/j.jadr.2026.101043
Reis, D. J., Hostetter, T. A., Forster, J. E., Matarazzo, B. B., Karel, M. J., & Bahraini, N. H. (2026) · Journal of Affective Disorders · doi:10.1016/j.jad.2026.121977
Cenkner, D. P., Duan, A., Horwitz, A. G., Vijayakumar, K. S. M., Odgers, C. L., Burgess, H. J., & Zalta, A. K. (2026) · Suicide and Life-Threatening Behavior · doi:10.1111/sltb.70136
- Authors
- Hirschfield, D. J., Rive, B., & Denee, T. R.
- Affiliations
- Janssen (United Kingdom) (GB)
- Venue
- Neuropsychiatric Disease and Treatment
- Publisher
- Informa UK Limited
- Published
- 2019-08
- Volume
- Volume 15
- Pages
- 2257-2271
- ISSN
- 1176-6328 (ISSN-L)
- 1178-2021
- PMC
- PMC6689539
- OpenAlex
- W2964775597
- Cited by
- 28
- References
- 46
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 4 · 2023: 4 · 2022: 6 · 2021: 6 · 2020: 1
- FWCI
- 3.80
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Neuropsychiatric Disease and Treatment (publishedVersion, cc-by-nc)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Dove Medical Press (Taylor and Francis Group) (submittedVersion, cc-by-nc)
- Topics
- Social Sciences › Psychology › Clinical Psychology › Suicide and Self-Harm Studies
- Social Sciences › Psychology › Social Psychology › Mental Health Treatment and Access
- Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
- Keywords
- suicidal ideation, major depressive disorder, disease burden, health-related quality of life, Work Productivity and Activity Impairment, healthcare resource utilization, depression, cross-national comparison
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