Table 4. Multivariable Cox's proportional hazards regression model showing likelihood of first line treatment failure for the four treatment combinations at 12 months.

Variable	Total started first line HAART		Rx failure at 12 months	Hazard Ratio*	95% CI	p-value
	N = 1448		n = 261 (%)
ART at	TDF+FTC+EFV	82	16 (19.5%)	0.98	(0.39 to 2.45)	0.963
start of 1st	TDF+3TC+EFV	191	53 (27.8%)	1.41	(0.64 to 3.11)	0.389
line	Truvada®+EFV	326	56 (17.2%)	0.94	(0.48 to 1.85)	0.855
HAART	Atripla®	849	136 (16.0%)	1

^*Adjusted for sex, age, ethnic group, baseline CD4 count, baseline viral load, stage of HIV at start of ART and year of starting first-line ART.