Table 5

Sensitivity analysis III: alternate indicators of practice resources

Annual general practice referrals to the NHS DPP
123
Proportion of QOF diabetes points achieved†1.11*** (1.08 to 1.14)1.11*** (1.08 to 1.14)1.11*** (1.07 to 1.14)
Proportion of patients reporting good experience making an appointment†1.01 (0.98 to 1.04)1.01 (0.99 to 1.04)1.00 (0.98 to 1.03)
Log payment per patient†0.99 (0.97 to 1.02)
Received minimum practice income guarantee payment0.92** (0.86 to 0.97)
Dispensing practice1.09 (1.00 to 1.18)
Practice has alternative provider medical services contract1.06 (0.88 to 1.27)
Practice has personal medical services contract0.89*** (0.83 to 0.95)
No. of FTE GPs per 1000 patients†1.04 (0.98 to 1.10)
No. of FTE nurses per 1000 patients†1.01 (0.98 to 1.04)
Observations22 12422 12422 124
Practices687168716871
Log-likelihood−190905.3−190897.3−190902.2
  • Poisson regressions with general practice random effects. Coefficients are incidence rate ratios.

  • *P<0.05; **p<0.01; ***p<0.001.

  • †Coefficients on these variables represent a 1 SD change in the explanatory variables. Column 1 represents the main model as presented in table 2. Columns 2 and 3 represent models including the same indicators of practice clinical quality and accessibility, but alternate indicators for practice resources. Models also include additional practice covariates: practice gender, age, deprivation and ethnicity compositions, practice rurality, type 2 diabetes prevalence, DPP wave, year and wave year interactions; 95% CIs in brackets.

  • DPP, Diabetes Prevention Programme; FTE, full-time equivalent; GP, general practitioner; NHS, National Health Service; QOF, Quality and Outcomes Framework.