“…Twelve studies used the receiver operating characteristic (ROC) curve to determine the cutoff value [ 23 , 24 , 26 , 27 , 29 – 36 ], and four studies adopted X-tile software [ 21 , 22 , 25 , 28 ]. Fifteen studies included reporting on the prognostic role of LMR for OS [ 21 – 27 , 29 – 36 ], and three studies presented the association between LMR and PFS [ 28 , 29 , 33 ]. Fourteen studies derived HRs and 95% CIs by using univariate analysis [ 21 , 22 , 24 – 34 , 36 ], and two studies applied multivariate analysis [ 23 , 35 ].…”