What is the importance of this study? ¥ While there is an estimate of the number of gay, bisexual and other men who have sex with men (GBM) in Vancouver, it is difficult to get a diverse and representative sample. ¥ Previous researchers have found certain sub-populations may be underrepresented in research data.

Citation: Lachowsky NJ, Sorge JT, Raymond HF, Cui Z, Sereda P, Rich A, Roth EA, Hogg RS, Moore DM. Does size really matter? A sensitivity analysis of number of seeds in a respondent-driven sampling study of gay, bisexual and other men who have sex with men in Vancouver, Canada. BMC Medical Research Methodology. 2016 Nov 16;16(1):157.