Table A2.

RDS sample and social network characteristics by income.

	Urban sample			Rural sample
	≤ $4,999	≥ $5,000	Total	≤ $4,999	≥ $5,000	Total
Distribution of recruits	403	39	442	244	57	301
Estimated pop. prop.	0.888	0.112	1.0	0.823	0.177	1.0
Sample prop.	0.914	0.086	1.0	0.802	0.198	1.0
Homophily	0.209	−0.222		0.035	0.081
Affiliation homophily	0.000	−0.015		0.073	0.073
Degree homophily	0.210	−0.210		−0.009	0.009
Recruitment matrix
≥ $4,999	361	35		185	38
< $5,000	42	4		59	19
Affiliation matrix
≥ $4,999	0.209	−0.209		0.035	−0.035
< $5,000	0.222	−0.222		−0.081	0.081