Table 2.

Multivariate analyses including sociodemographic and HIV risk characteristics associated with HIV intertest intervals among men who have sex with men, adjusted for year of visit

Correlates	STD Clinic (N = 13,517; Median ITI = 215 days)		Gay City Health Project (N = 8995; Median ITI = 257 days)
	Fold Increase or Decrease in ITI	95% CI	Fold Increase or Decrease in ITI	95% CI
Age (year)	1.02a	1.01 to 1.02	1.02a	1.01 to 1.02
Sex with men & women, last year (versus men only)	1.30a	1.23 to 1.37	1.09b	1.01 to 1.19
≥ 10 male sex partners, last year	0.77a	0.75 to 0.80	0.78a	0.74 to 0.81
Non-concordant UAI, last year	0.99c	0.95 to 1.02	n/a	n/a
History of STI	0.82a	0.79 to 0.85	n/a	n/a
Inhaled nitrite use, last year	0.97c	0.92 to 1.01	0.92a	0.87 to 0.97
Has regular healthcare provider or doctor	n/a	n/a	0.84a	0.81 to 0.88
Reported seeking this test as part of a regular schedule	n/a	n/a	0.84a	0.81 to 0.88
Visit year	0.99c	0.99 to 1.00	0.97a	0.96 to 0.98

ITI = intertest interval, in days. CI = confidence interval. UAI = unprotected anal intercourse.

STI = sexually transmitted infection; syphilis, gonorrhea, or chlamydial infection.

^ap < 0.001.

^bp < 0.05.

^cp > 0.05.