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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: AIDS Behav. 2019 Jun;23(6):1668–1679. doi: 10.1007/s10461-019-02396-w

TABLE 4.

GEE models of between-group differences in past 30-day sexual risk outcomes across the three-month study period.

Variable Total # of New Anal
Sex Partners		 Total CAS Events Total High-Risk CAS1
Events
IRR p 95% CI IRR p 95% CI IRR p 95% CI
Behavior at baseline2 1.11 .003 1.04-1.19 1.17 <.001 1.08-1.26 1.15 .002 1.05-1.25
Time 1.23 .003 1.07-1.40 1.08 .380 0.91-1.29 1.15 .126 0.96-1.37
intervention condition 0.50 <.001 0.35-0.72 0.88 .619 0.54-1.44 1.00 .989 0.60-1.68
Within-month contrasts
 Month 1 0.55 .040 0.31-0.97 0.73 .341 0.38-1.39 0.93 .833 0.46-1.86
 Month 2 0.37 .001 0.21-0.67 0.60 .114 0.32-1.13 0.69 .255 0.36-1.31
 Month 3 0.29 <.001 0.17-0.51 0.96 .905 0.52-1.77 0.88 .280 0.47-1.64

Note.

1

High-risk CAS events were those that involved CAS with partners who (1) were new/casual, or (2) whose HIV status was unknown, either because participants had not ever asked before, or reported that they did not know.

2

Term represents participants’ baseline values of each outcome.