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Table 1 Demographic and clinical characteristics in the entire study group and in the three strata of FEV1 loss

From: Smoking exposure, loss of forced expiratory volume in one second and the risk of lung cancer among patients with malignant disease who present with cardiac or pulmonary symptoms: a cross-sectional study

  1. aMean value ± 1 standard deviation
  2. bChi square test
  3. cOne way analysis of variance
  4. dKruskal-Wallis test
  5. eHistory of coronary artery disease defined as either angiographically proven coronary artery disease or a hospital diagnosis of myocardial infarction, presence of atrial fibrillation, impaired left ventricular systolic function (ejection fraction <50%), significant valvular heart disease, pulmonary hypertension, or left ventricular hypertrophy. Comprehensive definitions of these conditions are in given in reference 3
  6. fResidual tumor at the time of referral or time interval between cancer surgery/end of chemotherapy/radiotherapy and referral <3 months
  7. gEstimated glomerular filtration rate
  8. hFEV1 loss [% predicted] = 100% - FEV1 % predicted
  9. iNumbers of patients with {squamous cell cancer – adenocarcinoma – other histologic subtype}
  10. jMedian value, with interquartile range in brackets
  11. kFisher’s exact test, distribution of histologic subtypes
  12. lOne way analysis of variance for the log transformed values
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