Fig. 2

Hazard ratios of PD discontinuation according to PNI by cubic splines of Cox regression analyses. Cubic spline models of Cox proportional regression analyses reflecting hazard ratios for PD discontinuation according to the PNI in a cohort of 91 patients who underwent PD are shown (A: model 1; B: model 2; C: model 3). Histograms show the frequencies of the participants. Solid and dotted lines represent hazard ratios and 95% confidence intervals, respectively. The reference value was set at PNI = 40