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. Author manuscript; available in PMC: 2016 Jan 31.
Published in final edited form as: J Consult Clin Psychol. 2014 Sep 1;83(1):157–168. doi: 10.1037/a0037721

Table 2.

Monte Carlo Analyses of the Effect Sizes (GMA ds) for the Group Difference in Slopes as a Function of Δ and Sample Size

Estimates SEd Bias in Estimates, SEd, and CI
N δ Avg SD Avg Coverage Est % SEd % CI
50 .3464 .3545 .4506 .4325 .936 .0081 2.34 −.0181 4.02 .014
50 .6928 .7108 .4539 .4325 .935 .0180 2.60 −.0214 4.71 .015
100 .3464 .3533 .3095 .3040 .942 .0069 1.99 −.0055 1.78 .008
100 .6928 .7048 .3117 .3040 .943 .0120 1.73 −.0077 2.47 .007
150 .3464 .3504 .2532 .2477 .940 .0040 1.15 −.0055 2.17 .010
150 .6928 .7003 .2551 .2477 .939 .0075 1.08 −.0074 2.90 .011
250 .3464 .3468 .1938 .1915 .947 .0004 .12 −.0023 1.19 .003
250 .6928 .6951 .1952 .1915 .945 .0023 .33 −.0037 1.90 .005
500 .3464 .3466 .1373 .1353 .944 .0002 .06 −.0020 1.46 .006
500 . 6928 .6939 .1383 .1353 .944 .0011 .16 −.0030 2.17 .006

Note. Estimates Avg = average estimate (d) across replications, Estimates SD = standard deviation of estimates across replications, SEd Avg = average SEd across replications, Coverage = 95% coverage for d.