Random-Effects Model (k = 2; tau^2 estimator: REML)

tau^2 (estimated amount of total heterogeneity): 10.7707 (SE = 43.9364)
tau (square root of estimated tau^2 value):      3.2819
I^2 (total heterogeneity / total variability):   34.67%
H^2 (total variability / sampling variability):  1.53

Test for Heterogeneity: 
Q(df = 1) = 1.5307, p-val = 0.2160

Model Results:

estimate       se     zval     pval    ci.lb    ci.ub          
-51.1245   3.9239 -13.0291   <.0001 -58.8152 -43.4339      *** 

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Signif. codes:  0 *** 0.001 ** 0.01 * 0.05 . 0.1   1