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Table 3 Central tendencies and dispersion measures of registered continuous variables

From: Impact of methodology on estrogens’ effects on cerebral ischemia in rats: an updated meta-analysis

Variable Unit Mean Standard deviation Median Inter-quartile range
Total number of rats in estrogen treated and control groups   16.0 7.3 15 10-20
Slow-release pellets: estrogen dose/pellet μg 412.6 53.0 180.0 25.0-1000.0
Injections: daily estrogen dose μg/kg body weight 794.8 3006.2 100.0 11.9-200.0
Silastic capsules: estrogen dose/silastic capsule μg 77.5 124.8 28.0 27.2-28.0
Length of time between initiation of estrogen administration and induction of the ischemic damage Hours 221.6 600.5 168 0.5-324
Length of time between ischemia and evaluation of damage Hours 49.6 96.4 24.0 24.0-24.0
Infarct size ratio between estrogen treated and control rats % 72.1 42.3 56.2 43.7-93.9