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. Author manuscript; available in PMC: 2010 Apr 30.
Published in final edited form as: Psychiatry Res. 2009 Mar 10;166(2-3):238–246. doi: 10.1016/j.psychres.2008.01.009

Table 1.

Correlations between age, anxiety, lifetime substance use, and post-challenge measures by sex

1 2 3 4 5 6 7 8 9 10 Mean (SD)
1. Age - .18 .12 .39** .48** -.18 -.19 -.18 -.14 -.18 14.80 (1.44)
2. Anxiety sensitivity .22 - .49** -.02 .01 .18 -.17 -.02 .26* .12 23.58 (4.18)
3. Trait anxiety .47** .63** - .00 -.00 .02 .06 .09 .31** .18 29.08 (6.74)
4. Marijuana use frequency .35** .06 .25* - .69** -.59** -.06 -.13 -.02 -.03
5. Alcohol use frequency .39** .07 .32** .80** - -.56** -.09 .04 -.02 -.15
6. Cigarette use .21* -.12 -.29* -.75** -.66** - -.12 -.02 .02 .08
7. Post-challenge heart rate -.33** .11 -.09 -.01 .04 -.05 - .06 -.02 .10 77.79 (10.26)
8. Post-challenge skin conductance -.09 .04 .01 -.12 -.03 -.06 .18 - .12 .26* 5.68 (2.30)
9. API: Physical .13 .30* .42** .26* .16 -.29* -.14 -.03 - .40** 7.82 (5.49)
10. API: Cognitive .11 .50** .49** .29* .16 -.26* .02 .04 .72** - 1.48 (2.95)
Mean (SD) 15.04 (1.56) 24.69 (5.11) 31.10 (6.64) 77.40 (10.30) 4.97 (1.89) 8.49 (6.76) 1.56 (2.47)

Correlations for male participants are presented above the diagonal. Correlations for female participants are presented below the diagonal. Lifetime tobacco cigarette use was dummy coded (1 = Yes, 2 = No). Given that substance use variables are categorical, means are not reported.

*

p < .05,

**

p < .01.