Table 10. Summary of qualitative studies and mixed-methods studies included in the review.

Author	Study Methodology	Methods of Data Collection	Setting	Sample Size and sampling strategy	Age of Population (in years)
Sahoo et al. (2015) [44]	Qualitative	IDIs	Community	56 females Purposive sampling	16–24
Chakrapani et al. (2008) [34]	Qualitative	IDIs	Community	10 Male commercial sex workers (Men who have sex with Men) Purposive and snowball sampling	21–52
Sinha (2015) [43]	Qualitative	Participant observation, Life-history interviews, and IDIs	Community	49 Female Commercial Sex Workers Purposive sampling	22–50
Sahay et al. (2013) * [59]	Mixed Method	In-depth interview	Schools	130 (110 girls and 20 boys) Stratified Random sampling	8–30
Sahay (2010) * [62]	Mixed Method	In-depth interview	Community	350 women (tribal and non-tribal) Purposive sampling	10–18
Deb et al. (2008) * [74]	Mixed Method	In-depth Interview and Case Study	Clinical	26 Female Commercial Sex Workers Incidental sampling	18–33
Devine et al. (2010) * [38]	Mixed Method	In-depth interview	Community	220 Female Commercial Sex Workers Purposive sampling	≥18
Tomori et al. (2016) * [31]	Mixed Method	In-depth Interview and Focus Group Discussion	Community	11,788 Men who have sex with Men Respondent driven sampling	≥18 years