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- W1978023782 abstract "This study was undertaken to characterize the relation between the survival of patients with stage IIIB/IV nonsmall cell lung cancer (NSCLC) and pack-years of cigarette smoking (graded according to the American Joint Committee on Cancer staging system).Data were analyzed from patients with stage IIIB/IV NSCLC who had completed a prospective smoking questionnaire. The impact of pack-years of cigarette smoking, age, sex, Karnofsky performance status (KPS), and the presence of weight loss >5% was evaluated on overall survival using univariate and multivariate analyses.Smoking history and clinical data were available for 2010 patients with stage IIIB/IV NSCLC (1004 women and 1006 men). Approximately 70% of patients (1409 patients) had smoked >15 pack-years, 13% (270) were former and current smokers who had smoked < or = 15 pack-years, and 16% (331) were never-smokers (<100 lifetime cigarettes). Never-smokers had a longer median survival compared with former or current smokers (17.8 months vs 11.3 months; log-rank P < .001). Among smokers, patients with a < or = 15 pack-year history of smoking had a longer median survival than patients who had smoked >15 pack-years (14.6 months vs 10.8 months; log-rank P = .03). As the number of pack-years increased, the median overall survival decreased (log-rank P < .001). Multivariate analysis indicated that a history of smoking was an independent prognostic factor (hazard ratio, 1.36; P < .001).More cigarette smoking, measured in pack-years, was associated with decreased survival after a diagnosis of stage IIIB/IV NSCLC. Trials assessing survival in patients with stage IIIB/IV NSCLC should report a detailed cigarette smoking history for all patients." @default.
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- W1978023782 date "2010-02-01" @default.
- W1978023782 modified "2023-10-10" @default.
- W1978023782 title "Pack-years of cigarette smoking as a prognostic factor in patients with stage IIIB/IV nonsmall cell lung cancer" @default.
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- W1978023782 doi "https://doi.org/10.1002/cncr.24813" @default.
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