Table 2.

Generalized estimating equation analyses of self-reported abstinence and toxicology-verified abstinence for 85 veterans assigned to a money manager or to a control intervention^a

	Abstinence (%)
	Control (N=41)		Money manager (N=44)		Group			Week			Group × week
Outcome	M	SD	M	SD	Estimate	z	p	Estimate	z	p	Estimate	z	p	Nb
Primary
Self-reported abstinence from alcohol and cocaine	86	35	88	32	−.34	−.63	ns	−.03	−1.56	ns	.01	.38	ns	2,032
Negative toxicology for cocaine	88	32	92	28	.20	.36	ns	−.03	−3.69	<.001	−.02	−1.00	ns	871
Secondary
Self-reported abstinence from alcohol	88	32	88	32	−.06	−.12	ns	−.03	−1.61	ns	.02	.79	ns	2,034
Self-reported abstinence from cocaine	95	22	98	15	−.15	−.17	ns	−.002	−.05	ns	−.05	−1.05	ns	2,032

^aHigher (more positive) group coefficients of abstinence measures indicate higher proportions abstinent in the control group.

^bNumber of observations used in the analysis