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Table 1 Characteristics of the 1403 individuals diagnosed with lung cancers in 2004 categorized as adenocarcinomas, squamous cell carcinomas and small cell cancers and recruited among 10 French cancer registries

From: Are comorbidities associated with long-term survival of lung cancer? A population-based cohort study from French cancer registries

  Adenocarcinomas Squamous cell carcinomas Small cell carcinomas
N = 646 (100.0%) N = 524 (100.0%) N = 233 (100.0%)
Sex    
 Male 440 (68.1%) 474 (90.5%) 191 (82.0%)
 Female 206 (31.9%) 50 (9.5%) 42 (18.0%)
Age group    
 < 50 89 (13.8%) 21 (4.0%) 19 (8.1%)
 50–59 186 (28.8%) 118 (22.5%) 68 (29.2%)
 60–69 162 (25.1%) 142 (27.1%) 57 (24.5%)
 70–79 163 (25.2%) 173 (33.0%) 70 (30.0%)
 ≥ 80 46 (7.1%) 70 (13.4%) 19 (8.1%)
Comorbid conditionsa    
 Chronic obstructive pulmonary disease 130 (20.1%) 161 (30.7%) 54 (23.2%)
 Peripheral vascular disease 86 (13.3%) 77 (14.7%) 28 (12.0%)
 Congestive heart failure 54 (8.4%) 75 (14.3%) 23 (9.9%)
Charlson Comorbidity Index    
 0 319 (49.4%) 195 (37.2%) 107 (45.9%)
 1 159 (24.6%) 157 (30.0%) 61 (26.2%)
 2 84 (13.0%) 79 (15.1%) 31 (13.3%)
 ≥ 3 62 (9.6%) 75 (14.3%) 24 (10.3%)
 Unknown 22 (3.4%) 18 (3.4%) 10 (4.3%)
Topography    
 Main bronchus 22 (3.4%) 59 (11.3%) 24 (10.3%)
 Upper lobe 341 (52.8%) 254 (48.5%) 109 (46.8%)
 Middle lobe 26 (4.0%) 14 (2.7%) 12 (5.1%)
 Lower lobe 153 (23.7%) 133 (25.4%) 43 (18.5%)
 Overlapping lesion 33 (5.1%) 25 (4.8%) 26 (11.2%)
 Not specified 71 (11.0%) 39 (7.4%) 19 (8.1%)
Stage    
 Non-small cell – Surgery    
  1 75 (41.0%) 52 (37.4%)
  2 18 (9.8%) 39 (28.1%)
  3 62 (33.9%) 45 (32.4%)
  4 26 (14.2%) 2 (1.4%)
  Unknown 2 (1.1%) 1 (0.7%)
 Non-small cell – No surgery    
  1 8 (1.7%) 16 (4.2%)
  2 2 (0.4%) 5 (1.3%)
  3 87 (18.8%) 138 (36.0%)
  4 354 (76.5%) 198 (51.7%)
  Unknown 12 (2.6%) 26 (6.8%)
 Small cell – Surgery    
  Limited 6 (85.7%)
  Extensive 1 (14.3%)
  Unknown 0 (0.0%)
 Small cell – No surgery    
  Limited 61 (27.1%)
  Extensive 155 (68.9%)
  Unknown 9 (4.0%)
 Diagnostic mode    
  Incidental diagnosis 76 (11.8%) 57 (10.9%) 19 (8.1%)
  Pulmonary symptoms 360 (55.7%) 350 (66.8%) 143 (61.4%)
  Other symptoms 169 (26.2%) 96 (18.3%) 63 (27.0%)
  Surveillance of high-risk patients 29 (4.5%) 12 (2.3%) 2 (0.9%)
  Unknown 12 (1.9%) 9 (1.7%) 6 (2.6%)
 Tobacco smoking    
  Current smoker 274 (42.4%) 224 (42.7%) 123 (52.8%)
  Former-smoker 227 (35.1%) 248 (47.3%) 89 (38.2%)
  Never smoker 85 (13.2%) 15 (2.9%) 1 (0.4%)
  Unknown 60 (9.3%) 37 (7.1%) 20 (8.6%)
 Absence of treatment    
  Yes 78 (12.1%) 84 (16.0%) 34 (14.6%)
  Unknown 0 (0.0%) 0 (0.0%) 0 (0.0%)
  1. aThe three most frequent comorbid diseases were reported