Table 1.

Intercorrelations Between TAC-AUC, PEth, and Daily Drinks (N = 45)

Variable	1	2	3	4	5	6
1. Average TAC-AUC at Time 1	—
2. PEth at Time 1	0.41*	—
3. Average drinks per day at Time 1	0.32*	0.004	—
4. Change in average TAC-AUC per day	−0.91*	−0.20	−0.29*	—
5. Change in PEth	−0.41*	−0.59*	0.04	0.49*	—
6. Change in average drinks per day	−0.17	0.41*	−0.65*	0.35*	0.08	—

Note. TAC-AUC = transdermal alcohol concentration area under the curve; PEth = phosphatidylethanol. Change was calculated by subtracting Time 1 values (precontingency management [CM] period) from Time 2 values (the last 7 days of the CM period). Correlations that are negative indicate Time 1 values are correlated with reductions in corresponding variable; based on these values—persons with higher Time 1 values had on average, greater reductions between Time 1 and Time 2.

^*Represents correlations with p < .05.