Table 2.

Factors influencing HIV seroconversion among serodiscordant couples: multivariable analysis

Variable	RR	95.0% CI	P value
Age confirmed** (45–70 years as control)
<25 years	0.059	0.006–0.553	0.013
25+ years	0.660	0.263–1.656	0.376
35+ years	0.542	0.216–1.357	0.191
Sexual activity before diagnosis (once a month as control)
⩾3 times/week	6.780	1.949–23.591	0.003
1–2 times/week	5.841	2.158–15.807	0.001
Semi-monthly	3.358	1.186–9.510	0.023
PVL at first visit (not detected* as control)
<300 copies/ml	0.163	0.069–0.387	<0.001
⩾300 copies/ml	0.256	0.065–1.012	0.052