. Author manuscript; available in PMC: 2011 Jul 1.

Published in final edited form as: J Sex Res. 2010 Jul;47(4):355–363. doi: 10.1080/00224490903015843

Table 3.

Total number of unprotected sex acts^a regressed on life events and life events times methamphetamine use interaction terms controlling for gender, depressive symptoms, emotional support, and methamphetamine use^a, (N=99)^b

	Step1 beta	sr²	Step 2 beta	sr²	Step 3 beta	sr²
Gender (male = 0, female = 1)	-.26^**	.062	-.30^**	.081	-.28^**	.067
Depressive symptoms	-.01	.000	-.03	.001	-.04	.001
Grams of methamphetamine used in past 30 days	.18	.032	.17	.028	.16	.025
Positive life event			.04	.001	.03	.001
Negative life event			.24^*	.047	.23^*	.046
Positive life event x methamphetamine use					-.04	.001
Negative life event x methamphetamine use					-.04	.001
Constant	1.80^***		1.93^***		1.91^***
R²	.12		.18		.18
Adjusted R²	.09		.14		.12
Multiple R	.35		.42		.43
R² change	.12^**		.06^*		.00
F (3,95)	4.3^**
F (5,93)			4.0^**
F (7,91)					2.9^**

p<0.05

^**

p<0.01

^***

p<0.001

log 10 transformed variable

One case missing methamphetamine use data