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. Author manuscript; available in PMC: 2006 Apr 10.
Published in final edited form as: Drug Alcohol Depend. 2005 Apr 26;80(1):1–14. doi: 10.1016/j.drugalcdep.2005.02.005

Table 7.

Example results of bootstrap estimates of survival probabilities and t-tests of gender difference in alcohol LOTAD

Number of years following regular use Size of LOTAD
 Gender differences in LOTAD (StdDev) t-Value of LOTAD gender differences p-Value of LOTAD gender differences
Men Woment
5 0.129** 0.066* 0.063 (0.0351) 1.785 0.075
10 0.140** 0.099** 0.041 (0.0425) 0.955 0.340
15 0.113** 0.086** 0.026 (0.0430) 0.610 0.542
20 0.082** 0.087* -0.004 (0.0430) -0.103 0.918
25 0.064* 0.082* -0.018 (0.0428) -0.411 0.681

Notes: LOTAD is the length of time between onset of abuse and dependence. ATest of the difference between abuse survival probability and dependence survival probability (i.e., is LOTAD significantly different from zero?). StdDev: standard deviation. C.I.: confidence interval.

**

p<.005.

*

p<.05.