Fig. 4

Forest plots showing daily insulin requirement before and after application of umbilical cord-derived stem cell transplantation. a Comparison of daily insulin requirement at baseline and after WJ-MSCs intervention in both T1DM and T2DM and b comparison of daily insulin requirement at baseline and after UCB intervention in both T1DM and T2DM. The random-effects meta-analysis model (Der Simonian−Laird method) was used. The ends of the horizontal bars denote a 95% CI. The diamond gives the overall standardized mean difference (pooled estimate) for the combined results of all included trials