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Table 5 Cox regression analysis for predictors of survival in patients with idiopathic pulmonary fibrosis

From: Prevalence, risk factors, and impact of lung Cancer on outcomes of idiopathic pulmonary fibrosis: a study from the Middle East

Variables Hazard Ratio 95% CI P
Gender 0.615 0.318–1.192 0.150
Age 1.015 0.991–1.040 0.224
Smoking 2.114 1.370–5.118 0.004
Pack/year 0.998 0.968–1.029 0.880
FVC (% pred) 1.018 0.964–1.001 0.057
FEV1(% pred) 1.008 0.957–1.062 0.766
TLC (% pred) 0.702 0.956–1.014 0.298
DLCO (% pred) 1.148 0.319–4.966 0.067
Lung cancer 5.431 2.186–13.492 0.000
  1. CI confidence interval, FVC forced vital capacity, % pred; percentage of predicted value, FEV1 forced expiratory volume in 1 s, TLC total lung capacity, DLCO diffusing capacity of the lung for carbon monoxide