Question: what is the nutritional risk index?
Answer: Nutrition risk index was calculated as follows: NRI = (1.519 × serum albumin (g/L) +41.7× (present weight/usual weight). The patients with NRI score of >100 was considered in no risk group, 97.5–100 mild risk, 83.5–97.5 moderate risk, and < 83.5 has severe risk groups.