“…However, authors used different terms in their inclusion criteria and for outcome analysis. For example, the expression rescue-free bowel movement (RFBM) was chosen in two studies [35,36] and was defined by BMs that occurred without using any laxatives in the prior 24 h. Though, the expression spontaneous bowel movement (SBM) was more common [11,12,31,32,[37][38][39][40][41]. Interestingly, SBM was defined exactly the same as RFBM by authors who gave a definition for SBM [11,12,31,32,[37][38][39].…”