The correlation between the comprehensive nutrition index and quality of life of patients with nasopharyngeal carcinoma treated by intensity-modulated radiotherapy.

The purpose of this study was to compare the changing tendency of nutrition with 54 nasopharyngeal carcinoma patients during intensity-modulated radiation therapy (IMRT), and to investigate the correlation between comprehensive nutritional status and quality of life (QoL), which was assessed by the European Organization for Research and Treatment of Cancer Core Quality-of-Life Questionnaire. The nutritional index, including body mass index, ideal body weight percentage, usual body weight percentage, albumin, hemoglobin, and total lymphocyte count (TLC), was evaluated at 2 time points: within 48 h after admission (T1) and at the end of treatment with IMRT (T2). A statistically significant downgrade of every index was observed during IMRT. A comprehensive nutritional model was established by principal components analysis at T2. QoL scores of functional (P = 0.002) and the global QoL scales (P = 0.001) existed a positive correlation with comprehensive nutritional status. QoL scores of symptom scales (P = 0.002) and 6 single items (P = 0.005) had a negative correlation with it. The scores of global QoL scales in comprehensive nutrition of normal (20.4%), moderate (55.6%), and severe malnutrition (24.1%) were 69.70 ± 17.98, 48.33 ± 19.25, and 37.18 ± 24.67, respectively. Patients with different nutritional status had different QoL (B = 10.405, SE = 2.828, t = 3.680, P = 0.001). Multiaspect nutritional supports should be enhanced to improve patients' comprehensive nutritional status during treatment.