Fig. 5

Forest plot shows prevalence of vitamin D deficiency in accordane with time among south Asian adult population. Each horizontal line of the forest plot represents an individual study and the box plotted as prevalence for that study. In this forest plot all the diamonds except the last one represents polled prevalence in accordance with time; studies which conducted between 2001 and 2010 (first) and 2011–2020 (second). The horizontal points of the diamond represent the limit of 95% confidence interval