Figure 1.
The recruitlment chains of submitted surveys.
Each color represents a separate recruitment chain. Two seeds did not generate further participants.
Figure 2.
Cumulative number of survey submissions over time.
Figure 3.
Change in sample composition with increasing sample size (not adjusted for network size): a) proportion that currently has a romantic relationship; b) average age; c) proportion living in Ho Chi Minh City (the only variable that did not stabilize); and d) proportion who had sex in a public place during the past six months.
All variables available in the supplemental material.
Figure 4.
Sample proportions and estimated population proportions for a) education, b) income, and c) province.
Figure 5.
a) Relationship to recruiter, b) context in which participant first got to know his recruiter, and c) histogram of number of sex partners.