[Application of Onodera prognostic nutrition index in prognostic evaluation of elderly patients with colorectal cancer].

Objective: To study the applied valuation of Onodera prognostic nutrition index (Onodera index) in elderly patients with colorectal cancer.

Methods: Onodera indexes of 163 elderly patients with colorectal cancer were calculated and these patients were divided into better-nourished group (Onodera index ≥45) and under-nourished group (Onodera index <45). Correlations of Onodera index with general data, operation type, postoperative complication, recovery of gastrointestinal function, clinicopathological feature and prognosis were analyzed.