Correction

Calderón-Larrañaga A, Carney L, Soljak M, et al. Association of population and primary healthcare factors with hospital admission rates for chronic obstructive pulmonary disease in England: national cross-sectional study. Thorax 2011;66:191–96. We wish to report a single error in our paper on associations of population and primary healthcare factors with hospital admission rates for chronic obstructive pulmonary disease. An observant researcher has questioned an R squared value for a univariate analysis at primary care trust level. In our paper we reported that about 14.4% of the variance in hospital admissions was explained by GP supply. We have re-run the analyses and confirm that there was a typographical error on our part. The R squared value of 14.4% was actually for the variable GP list size and not for GP supply (the latter has a R squared of 0.1%). The rest of the values are correct. We consider...
Source: Thorax - Category: Respiratory Medicine Tags: Correction Source Type: research