Bubble plot with a fitted meta-regression line of the log prevalence of commercial pad use by adolescent girls over time, 104 studies in India published between 2000 and 2015. Bubble plot with a fitted meta-regression line of the log prevalence of commercial pad use by adolescent girls over time, 104 studies in India published between 2000 and 2015. Circles are sized according to the precision of each estimate with larger bubbles for more precise estimates. One study was excluded15 because of the large sample size (≈39 000), which led to distortion of all other information. Anna Maria van Eijk et al. BMJ Open 2016;6:e010290 ©2016 by British Medical Journal Publishing Group