Table 3.

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.