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

附表2 包含一个调节变量时不同效应量个数下的参数估计偏差(z-test)

k τ2 = 0.08 τ2 = 0.32 β = 0 β = 0.2 β = 0.5 β = 0 β = 0.2 β = 0.5 20 0.0000 0.0000 0.0003 0.0026 0.0005 -0.0009 40 0.0007 0.0004 -0.0009 0.0000 -0.0004 0.0003 60 -0.0003 0.0007 -0.0001 -0.0005 0.0000 0.0003 80 0.0000 0.0001 0.0008 0.0001 0.0013 0.0017 100 -0.0002 0.0001 -0.0001 0.0005 -0.0009 -0.0014 120 0.0001 0.0003 -0.0006 0.0007 0.0000 0.0002