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Table 2 Studies on health risk factors of UN peacekeepers

From: UN peacekeeper health and risk factors --- a systematic scoping review

Health risk factors

Author/year

WHO regions: Troop-contributing countries

Host countries

Study designs

Main outcomes

Natural environmental factors

Hu et al. 2005 [64], Lehtom¨aki et al. 2005 [118], Jin et al. 2008 [67], Korzeniewski et al. 2011 [97], Chen et al. 2012 [119], Liang et al. 2014 [120], Zhao et al. 2019 [62], Liu et al. 2021 [114]

Western Pacific Region: China

The Democratic Republic of Congo, Sudan

Medical report, Questionnaire, Retrospective control study

Natural environmental factors (harsh natural environment, poor geographical environment, hot climate, abundant rainfall).

European Region: Finland

Kosovo

Questionnaire

Natural environmental factors (mold, fungi, dust).

Multination

The Middle East

Medical report

Natural environmental factors (heat, wind, sand, dust, local fauna, low temperature, and mountain conditions).

Social environmental factors

MacDonald et al. 1998 [121], Ballone et al. 2000 [38], Mehlum et al. 2002 [17], Thoresen et al. 2003 [122], Maguen et al. 2004 [123], Hu et al. 2005 [64], Ippolito et al. 2005 [47], Dirkzwager et al. 2005 [124], Wessely et al. 2006 [39], Jia et al. 2009 [49], Proctor et al. 2009 [125], Zhou et al. 2016 [104], Wang et al. 2018 [110], Dixit et al. 2018 [35], Lamb et al. 2018 [126], Zhao et al. 2019 [62], Silveira-Rodrigues et al. 2021 [127]

Western Pacific Region: China, New Zealand

The Democratic Republic of the Congo, Mali, Lebanon, Multination

Medical report, Questionnaire, Retrospective study

Social environmental factors (turbulent social environment, complex war environment, differences in language and culture, different rules and regulations in the second-level peacekeeping hospital, poor local hygiene conditions, family and job roles).

European Region: Italy, Norway, Netherland, U.K.

Bosnia, Lebanon, Multination, West Africa

Cross-sectional study, Questionnaire, Cohort study

Social environmental factors (economic conditions, family relationships, unemployment, exposure to dangerous situations, lower level of education, reduced marriage rate, the lack of interoperability).

South-East Asia Region: India

Multination

Cross-sectional study

Social environmental factors (Family Relationships).

Region of the Americas: Brazil, U.S.

Haiti, Kosovo, Bosnia

Questionnaire, Cohort study

Social environmental factors (work-to-family enrichment support, family stressors and financial difficulties, differences in support structures).

Psychological factors

Bramsen et al. 2000 [15], Dirkzwager et al. 2005 [124], Ippolito et al. 2005 [47], Maguen et al. 2006 [121], Souza et al. 2008 [24], Jia et al. 2009 [49], Proctor et al. 2009 [125], Shao et al. 2011 [53], Britt et al. 2011 [42], Orme et al. 2014 [128], Silva et al. 2015 [129], Zhou et al. 2016 [104], Lamb et al. 2018 [126], Zhao et al. 2019 [62], Gjerstad et al. 2020 [37]

Western Pacific Region: China, Australia

Timor-Leste or the Solomon Islands, The Democratic Republic of the Congo, Lebanon, Multination

Questionnaire, Retrospective study

Psychological factors (higher hardiness scores are associated with lower levels of reported psychological distress and physical ill-health, resilience, life stress events and emotional experiences, lack of patience, loss of emotional control, longing for family members, instability state of mind).

European Region: Netherlands, Norway, U.K.

Lebanon, Yugosla, Multination

Cross-sectional study, Questionnaire, Interview

Psychological factors (personal barriers to disclose experiences and current unemployment, vulnerabilities and exposure to traumatic events, confidence and team cohesiveness to build personnel’s resilience).

Region of the Americas: Brazil, U.S.

Haiti, Multination, Kosovo, Bosnia

Longitudinal study, Questionnaire, Cohort study

Psychological factors (negative affect traits, no associations with CD4 or CD8 T cell numbers, personality hardness, lack of confidence in care and fears of stigmatization).

Behavioral lifestyle factors

Mehlum et al. 1999 [14], Alan et al. 2000 [130], Thoresen et al. 2004 [93], Xie et al. 2009 [71], Proctor et al. 2009 [125], Zhang et al. 2010 [52], Connorton et al. 2011 [30], Zhou et al. 2016 [104], Liu et al. 2021 [114], Qu et al. 2022 [131]

Western Pacific Region: China

Lebanon, Nigeria, Namibia, Ghana, The Democratic Republic of the Congo, Liberia, South Sudan

Retrospective study, Questionnaire, Medical report, Cross-sectional study

Behavioral lifestyle factors (group living, occupational activities and work-related stress, customs and lifestyles, training intensity, intensive labor, performing tasks at high temperatures, coping styles and resilience).

European Region: Norway

South Lebanon, Multination

Questionnaire, Interview

Behavioral lifestyle factors (alcohol consumption, Misuse of alcohol and other substances, suicide risk factors)

Region of the Americas: U.S.

Somalia, Bosnia

Questionnaire, Cohort study

Behavioral lifestyle factors (combat and sexual harassment, completing high demands and low control tasks).

Multination

Kosovo

Questionnaire

Behavioral lifestyle factors (Combat, alone, peacekeeping relief work).

Biological factors

Hu et al. 2005 [64], Shao et al. 2011 [53], Wang et al. 2018 [110]

Western Pacific Region: China

Mali, Lebanon, The Democratic Republic of the Congo

Medical report, Questionnaire

Biological factors (poor sanitary conditions, high prevalence of severe infectious diseases, high resistance to malaria parasites).

Health service factors

Hu et al. 2005 [64], Shao et al. 2011 [53], Wang et al. 2018 [110]

Western Pacific Region: China

Mali, Lebanon, The Democratic Republic of the Congo

Medical report, Questionnaire

Health service factors (difficult collection and follow-up of case data, increasing acute mental health stressors through counseling and protection, anti-malaria medicines and materials).