“…Of 107 studies included, 27 studies were based on samples from the US [45, 46, 57, 62, 63, 66-69, 72, 77, 81-83, 87, 92, 93, 96, 102, 106, 118, 119, 121, 125, 126, 132], followed by Australia (n = 14) [31,36,50,51,53,54,65,105,114,116,122,[129][130][131] and Canada (n = 11) [50,60,61,73,76,98,105,115,117,135] (one study included both Australia and Canada [70]). There were 96 crosssectional [31-35, 38, 40-50, 52-56, 58-102, 104-110, 113-121, 123-130, 134-137] and 12 longitudinal studies (prospective, n = 11 [39,53,54,103,111,112,130,133,137]; retrospective, n = 1 [65]), of which two studies included both cross-sectional and longitudinal designs [37,96]. Among 88 studies that reported sex/gender distribution of their sample [32-35, 37, 38, 40, 42, 44-49, 51-57, 59-62, 64-78, 82-85, 87-90, 92, 93, 95-104, 106-126, 128-135, 138], one was limited to girls in the UK [35] and in the remaining 87 studies an average of 49.6% were girls.…”