Table 2: Summary of the observed effects of the outlined 14 options to treat missing standard deviations (SDs) and/or sample sizes (SSs) on the estimated grand means and confidence intervals in comparison to the results from fully informed weighted meta-analyses in four simulated data sets with different patterns of missingness and correlation structures (MCAR – m issing c ompletely a tr andom, MAR – m issing a t r andom, MNAR – m issing n ot a t r andom and corMCAR – SDs/SSs are cor related to effect sizes andm issing c ompletely a t r andom).