Figure 3.

Forest plots depicting meta-analysis findings (random-effect model). Outcome: gestational weight a), body mass index b), and 25(OH)D level in blood c). A comparison between antenatal vitamin D supplementation (as the only or cosupplement with other supplements) and non-vitamin D based supplementation; Two trials had with identical trial author name and year have been suffixed with alphabet “a” (50) and “b” (18) after the study name and year

SD: Standard deviation, CI: Confidence interval, SMD: Standardized mean difference, 25(OH)D: 25-hydroxyvitamin D