Table 5. Estimated design effects of certain variables.

Study description		Study results
N	Characteristic		(RDS,)	(SRS*,)	()
430	HIV+	0.066	0.00036	0.00014	2.57
430	Syphilis+	0.146	0.00062	0.00029	2.14
430	Unprotected anal sex	0.705	0.00107	0.00048	2.23
430	Homosexual	0.548	0.00107	0.00058	1.84
430	College degree or higher	0.583	0.00167	0.00056	2.98

SRS refers to simple random sampling.

Note: the formula for estimation are presented in Appendix S2 .