Table 1.
Confidence interval width, coverage probability, estimated standard error (SE), and empirical SE for fixed effects analysis, with 40% missingness in sample variances and β1 = 1.5. NM is no missingness, MI is multiple imputation using gamma meta-regression, ME is mean imputation, SGR is single imputation using gamma meta-regression, SLM is single imputation using linear regression based on the log-variance, and CC is complete case analysis.
β1 = 1.5 | Width | Coverage | Estimated SE | Empirical SE |
---|---|---|---|---|
NM | 0.303 | 0.944 | 0.077 | 0.079 |
MI | 0.304 | 0.947 | 0.078 | 0.079 |
ME | 0.309 | 0.899 | 0.079 | 0.094 |
SGR | 0.304 | 0.946 | 0.078 | 0.079 |
SLM | 0.304 | 0.947 | 0.078 | 0.079 |
CC | 0.335 | 0.946 | 0.086 | 0.087 |