... Out of the 35 [35,38,40,42,47,49], four reported content validity [41,42,48,49], 26 reported construct validity [3, [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51]53,54,56,58,60,71], and 10 reported other forms of validity [16,30,40,41,47,51,53,56,61,71]. Twelve articles completed more thorough reliability and validity assessments, meaning they evaluated at least four different clinimetric properties [3, 35,38,[40][41][42][47][48][49]51,56,71]. Among the 35 articles, five did not report a reference test [26,34,39,43,58], five used an unvalidated reference question(s) [16,32,40,44,55], 23 used a validated measure of PA levels [3, 16,30,33,[35][36][37][38]41,42,[45][46][47][48][49]53,54,[56][57][58][59][60][61], and 2 used accelerometry data [54,71]. ...