The association of categorical factors such as route of nutrition, timing of initiation of nutrition intervention and so on with the categorical outcomes—complications related to cancer treatment, unplanned readmission and treatment toxicity—will be assessed by chi-square or Fisher exact test, as appropriate. The continuous variables such as PGSGA and other scores will be compared between different categories of the outcomes by t-test or ANOVA as appropriate. Appropriate non-parametric test will be conducted if distributional properties invalidate the use of t-test or ANOVA. The association of continuous variables with continuous outcomes will be assessed by Pearson or Spearman correlation. If necessary, multivariable analyses will be conducted using multiple regression analysis for continuous outcomes and logistic regression for binary outcomes.