Table 2.

Demographic characteristics at visit 40 (n = 2,270)

	No use N= 1604	Increasing N = 108	Decreasing N= 134	Consistently high N = 189	F	χ2	P
Age, mean (SD)	48.7 (10.0)	41.9 (10.5)a***	42.3 (9.1)b***	42.2 (9.5)c***	48.53	-	<0.001
Agea, n (%)					-	131.75	<0.001
18–29	76 (4.7)	16 (14.8)	15 (11.2)	19 (10.0)
30–39	209 (13.0)	20 (18.5)	31 (23.1)	57 (30.2)
40–49	578 (36.0)	45 (41.7)	64 (47.8)	70 (37.0)
50–59	536 (33.4)	25 (23.2)	21 (15.7)	40 (21.2)
60–79	205 (12.8)	2 (1.9)	3 (2.2)	3 (1.6)
White race (%)	78.4	56.5	58.2	59.3	-	72.54	<0.001
Baseline college graduate or more (%)	60.4	38.0	44.0	39.7	-	54.81	<0.001
>50K annual income (%)	37.3	16.2	21.4	27.4	-	35.05	<0.001
HIV negative (%)	55.7	38.0	33.6	39.7	-	46.85	<0.001
Binge drinking (%)	7.2	7.6	17.6	14.5	-	25.75	<0.001
No. drinks per week, mean (SD)	4.81 (8.18)	4.88 (7.61)	8.20 (11.57)b***, d*	7.90 (10.94)c***, e*	12.09	-	<0.001
Current smoker (%)	23.4	47.6	56.8	50.5	-	131.67	<0.001
NUAII partner, mean (SD), truncate at 10	0.96 (6.62)	1.55 (6.78)	1.53 (4.31)	3.30 (9.69)c***	6.40	-	<0.001
NUARI partner, mean (SD), truncate at 10	0.56 (2.74)	1.06 (5.02)	2.27 (10.38)b***	2.53 (7.29)c***	15.50	-	<0.001

For continuous variables, besides Analysis of Variance (ANOVA), post-hoc pairwise comparisons were performed using Sheffé adjustment for P values 10.8% data missing

^aComparison between the increasing and no use groups

^bComparison between the decreasing and no use groups

^cComparison between the consistently high and no use groups

^dComparison between the decreasing and increasing groups

^eComparison between the consistently high and increasing groups

^*P< 0.05

^**P < 0.01

^***P < 0.001