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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Res Social Adm Pharm. 2015 Jun 15;12(2):218–246. doi: 10.1016/j.sapharm.2015.06.001

Table 1.

Descriptive statistics for primary studies Included in medication adherence meta-analyses

Characteristic k Min Q1 Mdn Q3 Max
Total post – test sample size per study 53     5   16   42   91 2,032
Percentage attrition 36     0     0     0.8   13.2      67.7
Percentage female 50     0   18.2   42.05   56.18    100
Percentage non-Caucasian subjects 38     5   40   70   92.5    100
Mean age (years) 49   26.3   44.08   52.9   60.5      77.76
Percent adherence cutoff criterion for inclusion 27 <50 <80 <80 <90  <100

Note: Includes studies that contributed to primary analyses at least one effect size for any type of comparison.

k denotes number of comparisons providing data on characteristic. Q1=first quartile, Q3=third quartile.