Fig. 1

Prognostic impact of the geriatric nutritional risk index (GNRI) prior to chemoradiotherapy (CRT) in patients with rectal cancer. a Kaplan–Meier curve for overall survival (OS) in patients with rectal cancer according to pre-CRT GNRI levels (n = 93). OS was significantly higher in patients with a high GNRI (n = 55) compared with those with a low GNRI (n = 38) (p = 0.00020, log-rank test). b Kaplan–Meier curve for disease-free survival (DFS) in patients with rectal cancer according to pre-CRT GNRI levels (n = 93). DFS was significantly higher in patients with a high GNRI (n = 55) compared with those with a low GNRI (n = 38) (p = 0.0044, log-rank test)