Table 1.

Population demographics.

	App users		Non-users		Total		P-valuea
	N=324	%	N=150	%	N=474	%
Age
Median (IQR)	24 (22-27)		24 (22-26)		24 (22-27)		0.97
18-24 years old	170	52%	92	61%	262	55%
25-30 years old	154	48%	58	39%	212	45%
Multirace or multiethnicity	102	31%	52	35%	154	32%	0.49
Gay or bisexual	287	89%	124	83%	411	87%	0.08
Single	227	70%	75	50%	302	64%	<0.0001
Education
More than high school	295	91%	136	91%	431	91%
College degree	92	28%	23	15%	115	24%	0.01
Employed	205	63%	101	67%	306	65%	0.39
In school	167	52%	70	47%	237	50%	0.32
Income <$10,999	167	52%	81	54%	248	52%	0.47
HIV-positive	127	39%	72	48%	199	42%	0.07
Insured	230	71%	109	73%	339	72%	0.71
Homelessb	71	22%	33	22%	104	22%	0.98
Arrested or incarceratedb	24	7%	9	6%	33	7%	0.58
Transactional sexb	51	16%	5	3%	56	12%	0.03
Concurrent partnersb	173	53%	27	18%	200	42%	<0.0001
Median perceived HIV risk score (IQR)	9 (7-11)		11 (8-13)		10 (8-13)		0.01

Abbreviations: IQR, interquartile range.

^aP values were obtained from the Kruskal-Wallis test for continuous variables and chi square for dichotomous variables.

^bIn the past three months