Table 1.

Background Characteristics by Assigned Probability of Protection.

	Mean (± SD) or n (%) (n = 351)	Probability of Protection		t (p = ) or χ2 (p = )
		40%	90%
		Mean (± SD) or n (%)(n = 167)	Mean (± SD) or n (%)(n = 184)
Age (Years)	32.2 (± 10.1)	32.9 (± 11.7)	31.7 (± 8.5)	−1.12 (.263)
Gender (Male)	246 (70.1%)	115 (68.9%)	131 (71.2%)	0.63 (.633)
Ethnicity
non-Hispanic Caucasian	304 (86.6%)	143 (85.6%)	161 (87.5%)
African-American	9 (2.6%)	4 (2.4%)	5 (2.7%)	0.48 (.923)
Hispanic	27 (7.7%)	14 (8.4%)	13 (7.1%)
Other	11 (3.1%)	6 (3.6%)	5 (2.7%)
Education (Years)	11.6 (± 1.9)	11.7 (± 1.8)	11.5 ± (1.9)	−1.31 (.192)
Knowledge of PrEP (Yes)	26 (7.4%)	12 (8.4%)	12 (6.5%)	0.44 (.506)
Partner IDU (Yes)	88 (25.1%)	44 (23.9%)	44 (26.4%)	0.29 (.599)
Perceived HIV Risk (Yes)	192 (54.9%)	81 (48.8%)	111 (60.3%)	4.69 (.030)