Table 5 Mean differences of age, BMI, income, tobacco exposure, FEV1, number of comorbid conditions, and number of drugs in use between guideline adherent and nonadherent COPD subjects, stratified by recruitment source
From: Guideline adherence in hospital recruited and population based COPD patients
| Â | Population based COPD cases, mean difference adherent - nonadherent | Hospital recruited COPD patients, mean difference adherent - nonadherent |
|---|---|---|
Age (years at baseline) | 11.1 | −0.1 |
BMI (kg/m2) | −2.3 | −0.4 |
Income (NOK yearly income) | 401,898 | − 9539 |
Pack years ((cig/day*years smoked)/20) | −3.9 | −0.2 |
FEV1 (post-bronchodilator % of predicted) | −29.9** | − 16.5** |
Number of comorbid conditions (mean) | 0.8 | 0.1 |
Number of drugs in use (mean) | 3.6** | 1.0 |