Primary healthcare factors and hospital admission rates for COPD: no association

As the ‘observant researchers’ who questioned the R2 value reported by Calderón-Larrañaga et al we were disappointed by the correction in Thorax, 10 July 2013.1 2 Our concerns were raised by the high adjusted R2 value of 0.75 in the multivariate linear regression of the association of primary care trust (PCT) factors with PCT hospital admission rates and the high bivariate R2 value attributed to general practitioner (GP) supply. The authors pointed out to us their misreading of the bivariate ‘GP supply’ R2 of 0.14% which led to the error. We were surprised to read in their correction that the R2 value of 14.4% was for the variable ‘GP list size’. In the data they sent to us this variable R2 had been recorded as 17%. GP list size was not reported in the bivariate or multivariate analyses in the paper. This is worthy...

Source: Thorax - May 14, 2014 Category: Respiratory Medicine Authors: White, P., Jamieson, A. L. Tags: PostScript Source Type: research