TABLE 1.

ANOVAs Comparing Low and High Impulsivity Groups on Sex and Drug Risk Behaviors, HIV Relevant Attitudes, and Skills

Variable	Total Sample (n = 377) Mean (SD)	High Impulsivity (n = 201) Mean (SD)	Low Impulsivity (n = 176) Mean (SD)	F	P	d
Number of times used marijuana (last 3 months)	28.74 (41.86)	35.51 (49.62)	21.01 (28.97)	11.57	0.001	0.35
Number of times used alcohol (last 3 months)	6.35 (12.59)	8.48 (14.85)	3.92 (8.81)	12.67	0.001	0.37
Number of times used cocaine (last 3 months)	4.08 (14.62)	5.05 (14.28)	2.98 (14.96)	1.9	0.169	0.14
Number of partners (last 3 months)	1.93 (3.90)	1.93 (2.29)	1.93 (5.16)	0	0.987	0
Proportion unprotected sex (last 3 months)	38.87 (40.32)	42.59 (39.92)	34.63 (40.47)	3.68	0.056	0.2
Proportion unprotected sex when high on alcohol (last 3 months)	12.95 (32.06)	17.21 (35.71)	8.08 (26.58)	7.75	0.006	0.29
Proportion unprotected sex when high on cocaine (last 3 months)	5.95 (22.69)	8.02 (25.79)	3.59 (18.32)	3.6	0.058	0.2
Proportion unprotected sex when high on marijuana (last 3 months)	19.08 (35.29)	23.97 (37.67)	13.49 (31.54)	8.43	0.004	0.3
Proportion unprotected vaginal sex (last 3 months)	27.27 (39.15)	30.47 (39.87)	23.62 (38.09)	2.88	0.09	0.18
Total number of sex acts (last 3 months)	17.37 (31.85)	16.91 (25.60)	17.91 (37.83)	0.09	0.761	0.03
Anxiety about contracting HIV	3.13 (0.67)	3.21 (0.63)	3.04 (0.70)	6	0.015	0.25
Condom attitudes	3.24 (0.36)	3.21 (0.35)	3.28 (0.38)	3.84	0.051	0.2
Condom use skills	4.83 (2.18)	4.91 (2.09)	4.74 (2.29)	0.58	0.446	0.08
Knowledge about HIV	13.37 (2.88)	13.67 (2.81)	13.03 (2.94)	4.63	0.032	0.22
Perceived susceptibility	2.31 (0.62)	2.37 (0.59)	2.24 (0.65)	4.23	0.04	0.21
Prevention beliefs	2.69 (0.48)	2.66 (0.49)	2.72 (0.46)	1.76	0.186	0.18
Sexual self-efficacy	3.24 (0.57)	3.16 (0.50)	3.33 (0.63)	8.52	0.004	0.3
Behavioral intentions	22.44 (5.30)	22.12 (5.73)	22.80 (4.76)	1.55	0.214	0.13
Sexual attitudes	4.30 (0.63)	4.21 (0.65)	4.39 (0.60)	7.57	0.006	0.28