Table 4

Sensitivity analyses

Practice active for the entire time-windowExcluding practices with APMS contractRandom-effect model with NHS region as random effect
IRR (95% CI)P valueIRR (95% CI)P valueIRR (95% CI)P value
IMD
1 (least deprived)Reference
21.01 (0.98 to 1.05)0.3861.02 (0.99 to 1.05)0.2541.02 (0.95 to 1.09)0.583
31.07 (1.04 to 1.11)0.0001.07 (1.04 to 1.11)0.0001.07 (1.01 to 1.15)0.031
41.08 (1.05 to 1.12)0.0001.09 (1.06 to 1.13)0.0001.09 (1.02 to 1.17)0.007
5 (most deprived)1.09 (1.06 to 1.13)0.0001.11 (1.08 to 1.15)0.0001.10 (1.03 to 1.18)0.004
2007Reference
20081.06 (0.99 to 1.12)0.0801.08 (1.01 to 1.14)0.0151.09 (0.97 to 1.22)0.140
20091.31 (1.23 to 1.39)0.0001.33 (1.26 to 1.41)0.0001.34 (1.20 to 1.50)0.000
20101.35 (1.27 to 1.43)0.0001.35 (1.28 to 1.43)0.0001.36 (1.22 to 1.52)0.000
20111.53 (1.44 to 1.62)0.0001.52 (1.44 to 1.61)0.0001.53 (1.37 to 1.70)0.000
20121.56 (1.47 to 1.65)0.0001.55 (1.46 to 1.64)0.0001.57 (1.41 to 1.74)0.000
20131.65 (1.56 to 1.75)0.0001.65 (1.57 to 1.75)0.0001.68 (1.51 to 1.86)0.000
20141.70 (1.61 to 1.80)0.0001.73 (1.63 to 1.82)0.0001.74 (1.56 to 1.93)0.000
20151.31 (1.23 to 1.39)0.0001.31 (1.24 to 1.39)0.0001.37 (1.22 to 1.53)0.000
20161.31 (1.24 to 1.39)0.0001.31 (1.24 to 1.39)0.0001.37 (1.22 to 1.53)0.000
20171.40 (1.32 to 1.48)0.0001.39 (1.31 to 1.47)0.0001.40 (1.25 to 1.57)0.000
20181.53 (1.44 to 1.61)0.0001.49 (1.41 to 1.57)0.0001.49 (1.34 to 1.67)0.000
20191.33 (1.26 to 1.41)0.0001.31 (1.23 to 1.38)0.0001.33 (1.18 to 1.49)0.000
  • Predictors of general practitioner turnover rates: (i) restricting the analysis to practices active for the entire time-window; (ii) excluding practices with APMS contract; (iii) random-effect model with NHS region as random effect.

  • APMS, Alternative Provider Medical Service; IMD, Index of Multiple Deprivation; IRR, incidence rate ratios; NHS, National Health Service.