Secondary analysis of respiratory consultations adjusting for other baseline covariates
| Covariates in negative binomial model | Relative rate adjusted for covariate (95% CI) | |
| Treatment group only | 1.42 (1.08 to 1.87), p=0.0118 | |
| GP site plus the following covariate: | P-value for covariate listed | |
| Respiratory consultations from 12 months to baseline | 1.35 (1.04 to 1.74), p=0.0227 | <0.0001 |
| Pack-years | 1.40 (1.07 to 1.82), p=0.0125 | 0.2513 |
| Age | 1.40 (1.07 to 1.81), p=0.0128 | 0.0122 |
| FEV1 | 1.37 (1.06 to 1.77), p=0.0159 | <0.0001 |
| Gender | 1.40 (1.08 to 1.83), p=0.0115 | 0.3145 |
| Smoker | 1.39 (1.07 to 1.82), p=0.0142 | 0.7077 |
| MRC dyspnoea (1–2 vs 3–4) | 1.41 (1.08 to 1.83), p=0.0110 | 0.0728 |
| Cardiovascular comorbidity | 1.37 (1.05 to 1.78), p=0.0188 | 0.0756 |
| Respiratory comorbidity | 1.38 (1.08 to 1.78), p=0.0112 | <0.0001 |
| Psychiatric comorbidity | 1.40 (1.08 to 1.81), p=0.0100 | 0.9965 |
| Diabetes | 1.40 (1.08 to 1.83), p=0.0116 | 0.4836 |
| Other comorbidity | 1.41 (1.08 to 1.84), p=0.0103 | 0.2033 |
GP, general practitioner.