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Table 2 Prognostic factors for overall survival

From: A retrospective comparative analysis of elderly and younger patients undergoing pulmonary resection for stage I non-small cell lung cancer

  Univariate analysis
(log-rank test)
Multivariate analysis
(Cox hazard model)
Prognostic factors HR (95 % CI) p HR (95 % CI) p
Age group 4.2 (3.1–5.6) <0.001 3.6 (2.1–6.2) <0.001
Low DLCOa 5.2 (3.2–8.7) <0.001 3.8 (2.1–7.1) <0.001
IPFb 13.8 (7.6–25.0) <0.001 4.8 (2.1–10.8) <0.001
Male 2.6 (1.7–3.9) <0.001 3.2 (1.4–7.1) 0.005
Pulmonary Tbc.c 1.5 (1.1–2.2) 0.039   -
Hypertension 1.39 (1.1–1.9) 0.036   -
Diabetes mellitus 1.9 (1.3–2.8) <0.001   -
Decreased kidney functiond 2.7 (1.1–7.2) 0.043   -
Stage IB 1.9 (1.4–2.6) <0.001   -
Lobectomy/bi-lobectomy 1.7 (1.1–2.8) 0.033   -
Thoracotomy 2.8 (2.0–3.9) <0.001   -
  1. aExpected diffusing capacity for carbon monoxide less than 70 % of prediction
  2. bInterstitial pulmonary fibrosis
  3. cPrevious history of pulmonary tuberculosis
  4. dPreoperative creatinine level higher than 1.5 mg/dL