Table 4

Coefficients from multivariate model using NLCA data and from Thoracoscore

Coefficient
Thoracoscore6NLCA data
Definition of early mortality30 days or in hospital90 days
Number of deaths218169
Age (years)
 <55
 55–650.770.31
 >651.01
 66–750.97
 >751.40
Sex
 Women
 Men0.450.23
ASA score
 ≤2
 ≥30.61
Performance status
 0
 ≤2
 1–20.68
 ≥30.690.21*
MRC dyspnoea score
 ≤2
 ≥30.91
% predicted FEV1
 >80%
 61–80%0.20
 40–60%0.69
 <40%0.95
Priority
 Elective
 Urgent/emergency0.84
Procedure class
 Other†
 (Bi-)lobectomy, wedge or segmentectomy
 Other‡0.07
 Pneumonectomy1.221.16
Diagnosis group
 Benign
 Malignant1.24
Comorbidity score§
 0
 1–20.74
 ≥30.91
Charlson index
 0–1
 ≥20.33
Stage
 IA
 IB0.42
 IIA or IIB0.51
 IIIA0.84
 Constant−7.37−5.28
  • *Only 40 patients and two deaths in this group.

  • †Other includes mediastinoscopy or other mediastinal surgery, wedge resection, lobectomy or bi-lobectomy.

  • ‡Other includes procedures listed in online supplementary appendix A. Odds=exp (total of coefficients+constant); probability of death=odds/(1+odds).

  • §Number of significant comorbid conditions, including smoking, history of cancer, chronic obstructive pulmonary disease, diabetes mellitus, arterial hypertension, peripheral vascular disease, obesity and alcoholism.

  • ASA, American Society of Anaesthesiologists; FEV1, forced expiratory volume in 1 s; MRC, Medical Research Council; NLCA, National Lung Cancer Audit; –, indicates baseline group.