元回归中效应量的最小个数需求：基于统计功效和估计精度

方俊燕, 张敏强

What is the minimum number of effect sizes required in meta-regression? An estimation based on statistical power and estimation precision

FANG Junyan, ZHANG Minqiang

表2 参数估计精度在不同情境下对最小效应量个数的需求(τ2 = 0.32)

检验方法 τ2=0.32 β为0 β(均)较小 β(均)较大 β一个较大, 一个较小 β = 0 β = (0,0) β = 0.2 β = (0.2,0.2) β = 0.5 β = (0.5,0.5) β = (0.2,0.5) Knha-test 38 38 38 38 38 38 38 z-test 43 43 43 43 43 43 43