Statistics;I;II;III
"Mean effect size";0.047;0.026;0.047
"95% CI";"0.029 to 0.066";"0.026 to 0.026";"0.028 to 0.066"
"N of estimates";477;477;477
"τ
              2";0.043;–;0.044
"I
              2 (%)";100;99.98;100
"K studies";61;61;61