Random-Effects Model (k = 7; tau^2 estimator: REML)

tau^2 (estimated amount of total heterogeneity): 171.2100 (SE = 116.4897)
tau (square root of estimated tau^2 value):      13.0847
I^2 (total heterogeneity / total variability):   90.92%
H^2 (total variability / sampling variability):  11.01

Test for Heterogeneity: 
Q(df = 6) = 30.8465, p-val < .0001

Model Results:

estimate       se     zval     pval    ci.lb    ci.ub          
-67.3045   5.3794 -12.5114   <.0001 -77.8480 -56.7609      *** 

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