Univariate analysis for OS in the entire patient population showed that sex, ECOG performance status, clinical TNM stage, reason for definitive chemoradiotherapy, weight loss during chemoradiotherapy, overall tumour response to definitive chemoradiotherapy, pre‐treatment serum albumin level, post‐treatment serum albumin level and post‐treatment NLR were significantly associated with OS (Table 3). Here, ALB is linked to neoplasm.