Table 2.

Bivariate Survival Analyses of Biological Risk Behaviors at Baseline by Final HIV Serostatus (n = 9,481), January 2009 - June 2014.

	HIV-negatives (n = 9,111)	HIV-positives (n = 370)	Person-Years	Number of HIV Infections per 100 Person-Years
Chlamydia Testing Result				p < 0.0001
Negative	7,472	279	14,088	1.98
Positive	1,030	77	1,856	4.15
Missing	609	14	949	1.47
Gonorrhea Testing Result				p < 0.0001
Negative	7,292	270	13,805	1.96
Positive	1,230	87	2,178	3.99
Missing	589	13	910	1.43
Syphilis Testing Result				p = 0.0004
Negative	7,973	303	14,949	2.03
Positive	86	10	158	6.31
Missing	1,052	57	1,787	3.19
Tested Positive for any STI				p < 0.0001
Negative	6,052	188	11,523	1.63
Positive	2,100	141	3,753	3.76
Missing	959	41	1,618	2.53
History of Chlamydia				p < 0.0001
Never Diagnosed	7,390	265	13,489	1.96
Diagnosed More than One Year Ago	1,310	70	2,553	2.74
Diagnosed within the Last Year	353	33	694	4.76
Missing	58	2	159	1.26
History of Gonorrhea				p < 0.0001
Never Diagnosed	6,803	239	12,161	1.97
Diagnosed More than One Year Ago	1,811	81	3,681	2.20
Diagnosed within the Last Year	429	48	866	5.54
Missing	68	2	185	1.08
History of Syphilis				p = 0.0002
Never Diagnosed	8,482	326	15,527	2.10
Diagnosed More than One Year Ago	363	21	706	2.98
Diagnosed within the Last Year	172	19	409	4.64
Missing	94	4	251	1.59
History of Herpes Simplex Type II				p = 0.26
Never Diagnosed	7,892	333	14,677	2.27
Diagnosed More than One Year Ago	401	10	717	1.39
Diagnosed within the Last Year	144	7	291	2.40
Missing	674	20	1,208	1.65
History of Chlamydia, Gonorrhea and/or Syphilis				p < 0.0001
Never Diagnosed	4,374	116	7,801	1.49
Diagnosed More than One Year Ago	1,975	66	3,952	1.67
Diagnosed within the Last Year*	2,682	187	4,933	3.79
Missing	80	1	208	0.48
Total	9,111	370	16,894	2.18

^*Individuals who tested positive at baseline for an STI were classified as “Diagnosed within the Last Year”