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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Psychol Addict Behav. 2010 Jun;24(2):300–310. doi: 10.1037/a0019014

Table 1.

Zero-Order Correlations Between Study Variables and Descriptive Statistics

Variable 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1. Gendera -- .04 .22** −.05 .01 −.06 −.27*** .06 −.02 .08 .13 .11 .10 .12 .04
2. T2 Ageb -- −.04 −.10 −.04 −.09 −.21** −.14* .05 .38*** .21** .33*** .19** .18* .29***
3. T1 Risk -- −.34*** .21** −.13* −.16* .15* −.23** .14* .23** .20** .22** .14* .07
4. T1 Parent-Child Communication – M & C -- −.18** .37*** .27*** −.02 .18* −.14* −.13 −.15* −.08 .02 .01
5. T1 Negative Errors -- −.18** −.06 .11 −.07 .21** .17* .21** .21** .14* .07
6. T1 Adaptive Coping -- .19** −.08 .21** −.20** −.19** −.21** −.13 −.06 −.14*
7. T2 Parental Monitoring – M & C -- −.11 .31*** −.40** −.44*** −.47*** −.47*** −.30*** −.29***
8. T2 Negative Errors -- −.18* .10 .20** .17* .25*** .23** .13
9. T2 Adaptive Coping -- −.10 −.23** −.19** −.22** −.15* −.22**
10. T2 Alcohol Use -- .61*** .90*** .62*** .37*** .34***
11. T2 Marijuana Use -- .90*** .75*** .52*** .36***
12. T2 Alcohol and Marijuana Use Composited -- .77*** .50*** .39***
13. T2 Polydrug Use -- .84*** .37***
14. T2 Other Drug Use -- .44***
15. T2 Number of Sexual Partners --

Mean (Standard Deviation) 0.5 (0.5) 16.4 (1.1) 0.0 (0.6) 42.9 (4.2) 7.0 (3.1) 0.0 (0.9) 51.5 (8.0) 6.5 (2.7) 0.7 (0.9) 3.0 (2.0) 2.0 (1.8) 0.0 (0.9) 1.7 (2.2) 1.1 (0.5) 0.7 (1.3)

Note. The N for each cell ranges from 193 – 240. Unless otherwise noted, measures are youth-reported.

*

p < .05.

**

p < .01.

***

p < .001.

a

This is a dummy-coded variable with 0 = female and 1 = male.

b

T1 represents pre-test; T2 represents 6-year follow-up.