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. 2016 Apr 15;11(4):e0153489. doi: 10.1371/journal.pone.0153489

Table 1. Characteristics of reviewed articles.

Studies, No. %(N = 91)
Sub-population
Former blood/plasma donors 9 9.9
HIV/TB 3 3.3
Injected drug users 3 3.3
Pregnant women 3 3.3
Men who have sex with man 3 3.3
Unspecific 70 76.9
Study type
Cross-sectional 65 71.4
Case-control 22 24.1
Cohort 2 2.2
Other 3 3.3
Sample method
Convenience 27 29.7
Random 17 18.7
Complete 9 9.9
Other 6 6.6
Not available 32 35.1
Sample sizea
≤50 11 12.1
51–100 21 23.1
101–200 27 29.6
201–300 16 17.6
>300 16 17.6
Research topic
Depression 78 85.7
Anxiety 64 70.3
Suicide 11 12.1
PTSDb 1 1.1
HANDc 9 9.9
Substance use 18 19.8

aSample size of people living with HIV

bPost-traumatic stress disorders

cHIV-associated neurocognitive disorders