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. Author manuscript; available in PMC: 2019 Aug 1.
Published in final edited form as: Drug Alcohol Depend. 2018 Jun 21;189:154–160. doi: 10.1016/j.drugalcdep.2018.05.013

Table 2:

Between-group differences in MEMS adherence (N = 66)

iTAB Active Control Difference Test Effect Size

Mean (SD) Mean (SD) Wilcoxon-Rank Statistic

Overall MEMS Adherence (%) 68.0 (0.3) 70.4 (0.3) Z = 0.42, p = 0.68 r = 0.05
MEMS dose timing (mins) 181.0 (133.1) 195.2 (129.9) Z = 0.51, p = 0.61 r = 0.06
MEMS adherence based on dose timing (%) 43.9 (32.2) 45.5 (30.5) Z = 0.06, p = 0.95 r = 0.01

Note. The effect size, r, was calculated as Z/sqrt(n) (Rosenthal, 1991)