title: The prognostic impact of quality of life assessed with the EORTC QLQ-C30 in inoperable non-small cell lung carcinoma treated with radiotherapy.
abstract: OBJECTIVE
  The purpose of this study was to assess the prognostic significance of pretreatment quality of life (QoL) scores and symptom scores in a group of patients treated with high dose radiotherapy.
  
  
  METHODS
  A total of 198 patients treated with external irradiation (>/=60 Gy) were included. In all these patients, baseline QoL was assessed using the EORTC QLQ-C30. The prognostic significance of a number of non-QoL and QoL parameters with regard to survival was estimated in both univariate and multivariate analyses.
  
  
  RESULTS
  In a multivariate model including the non-QoL parameters, performance status, weight loss and N-classification were independent prognostic factors for survival. After entering the QoL parameters in the model, global QoL was the strongest prognostic factor, while performance status lost its significance. Subsequently, a significant interaction term was found between N-classification and global QoL, indicating that global QoL was an independent prognostic factor but that the effect varied as a function of N-status. In N+ patients, the median survival in the group with low scores for global QoL was 4.5 months, which was significantly worse (P<0.0001) compared with the high score group in which the median survival was 12.9 months.
  
  
  CONCLUSIONS
  Global QoL is a strong prognostic factor for survival in patients with NSCLC who have pathological lymph nodes at presentation and who are treated with radical or curative radiotherapy.
authors.affiliation: Radiotherapeutisch Instituut Limburg, Heerlen, Netherlands.
authors.forename: H
authors.initials: H
authors.lastname: Langendijk
authors.forename: N K
authors.initials: NK
authors.lastname: Aaronson
authors.forename: J M
authors.initials: JM
authors.lastname: de Jong
authors.forename: G P
authors.initials: GP
authors.lastname: ten Velde
authors.forename: M J
authors.initials: MJ
authors.lastname: Muller
authors.forename: M
authors.initials: M
authors.lastname: Wouters
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D002289:Carcinoma, Non-Small-Cell Lung / Q000523:psychology* / Q000532:radiotherapy / Q000556:secondary; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008175:Lung Neoplasms / Q000523:psychology* / Q000532:radiotherapy; D008207:Lymphatic Metastasis / Q000473:pathology; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009367:Neoplasm Staging; D011379:Prognosis; D016016:Proportional Hazards Models; D011446:Prospective Studies; D011788:Quality of Life; D011879:Radiotherapy Dosage; D011795:Surveys and Questionnaires; D015996:Survival Rate; D015431:Weight Loss