Table 2.

Association of antigen-specific T-cell responses with HIV-1 infection risk

Antigen pool	Multivariate analysis		Multivariate analysis with backward selection
	HR (95% CI)	P value	HR (95% CI)	P value
Gag	0.91 (0.57–1.45)	0.711	NR	NS
Protease	2.5 (1.75–3.58)	<0.001	2.4 (1.69–3.41)	<0.001
RT	0.78 (0.52–1.18)	0.238	NR	NS
Integrase	0.52 (0.28–0.96)	0.038	0.49 (0.27–0.89)	0.018
Vif	0.36 (0.19–0.66)	0.001	0.33 (0.18–0.60)	<0.001
Nef	0.56 (0.30–1.04)	0.065	0.52 (0.28–0.96)	0.035

NR, not reported; NS, not significant; RT, Reverse Transcriptase.