Variable | Lung cancer-specific survival HR (95% CI*) | Overall survival HR (95% CI) |
Lymph node ratio | ||
≤0.15 | Reference | Reference |
0.16–0.5 | 1.26 (1.07 to 1.48) | 1.31 (1.14 to 1.50) |
>0.5 | 1.92 (1.57 to 2.34) | 1.88 (1.58 to 2.34) |
Age, years | 1.02 (1.01 to 1.03) | 1.02 (1.01 to 1.03) |
Female | 0.82 (0.71 to 0.95) | 0.80 (0.70 to 0.91) |
Race/ethnicity | ||
White | Reference | Reference |
Black | 0.69 (0.48 to 1.03) | 0.79 (0.58 to 1.08) |
Hispanic | 0.41 (0.16 to 0.96) | 0.59 (0.31 to 1.10) |
Other | 1.03 (0.78 to 1.37) | 1.08 (0.85 to 1.37) |
Married | 0.90 (0.78 to 1.05) | 0.85 (0.75 to 0.97) |
Median income in ZIP code of residence | ||
Lowest quartile | Reference | Reference |
Second quartile | 0.97 (0.80 to 1.17) | 1.02 (0.87 to 1.21) |
Third quartile | 0.84 (0.70 to 1.03) | 0.86 (0.73 to 1.02) |
Highest quartile | 0.83 (0.69 to 1.02) | 0.90 (0.76 to 1.06) |
Comorbidity score, N (%) | ||
≤1 | Reference | Reference |
1–2 | 1.05 (0.90 to 1.25) | 1.08 (0.94 to 1.23) |
>2 | 1.32 (1.11 to 1.56) | 1.42 (1.23 to 1.65) |
Histology | ||
Adenocarcinoma | Reference | Reference |
Bronchioloalveolar carcinoma | 0.97 (0.74 to 1.26) | 0.91 (0.71 to 1.15) |
Squamous cell carcinoma | 0.79 (0.67 to 0.93) | 0.82 (0.71 to 0.94) |
Large cell | 1.02 (0.78 to 1.34) | 1.03 (0.81 to 1.30) |
Other | 1.12 (0.82 to 1.56) | 1.05 (0.79 to 1.40) |
Tumour status | ||
T1A | Reference | Reference |
T1B | 1.13 (0.85 to 1.50) | 1.08 (0.86 to 1.37) |
T2A | 1.55 (1.21 to 1.99) | 1.36 (1.10 to 1.66) |
T2B | 1.89 (1.40 to 2.55) | 1.60 (1.25 to 2.06) |
T3 | 2.05 (1.54 to 2.74) | 1.77 (1.40 to 2.25) |
Tumour location | ||
Upper lobe | Reference | Reference |
Lower lobe | 1.16 (1.01 to 1.33) | 1.08 (0.97 to 1.24) |
Other location | 1.13 (0.88 to 1.46) | 1.19 (0.96 to 1.47) |
Type of surgery | ||
Lobectomy | Reference | Reference |
Pneumonectomy | 1.26 (1.04 to 1.54) | 1.23 (1.03 to 1.45) |
Postoperative radiation therapy | 1.19 (1.03 to 1.37) | 1.24 (1.10 to 1.40) |
Adjuvant chemotherapy | 0.76 (0.63 to 0.91) | 0.69 (0.55 to 0.75) |
↵* Adjusted HRs from model including all covariates listed in the table.