“…Of the 26 studies included in this review, 15 studies (58%) 19,20,[23][24][25]28,30,32,33,[35][36][37][40][41][42] were rated high quality and 11 studies (42%) 14,21,22,26,27,29,31,34,38,39,43 acceptable quality (Supplemental Digital Content, Table 2, available at: http://links.lww.com/JACPT/A23). More of the prospective studies (13 of 22; 59%) 19,20,[23][24][25]30,32,33,35,37,[40][41][42] than the retrospective studies (2 of 4; 50%) 28,36 were high quality.…”