Table 5.
Associations between covariates of interest and consultation volume, incidence rate ratios (and 95% confidence intervals) from main negative binomial regression model
| Parameter | All consultations – all staff | All consultations – GPs | Face-to-face consultations – all staff | Face-to-face consultations – GPs |
| Year | 1.046 (1.045 to 1.047) |
1.028 (1.028 to 1.029) |
0.995 (0.994 to 0.997) |
0.988 (0.986 to 0.989) |
| List size (per 1000 patients) | 1.003 (1.002 to 1.004) |
0.997 (0.996 to 0.998) |
1.001 (0.998 to 1.003) |
0.992 (0.990 to 0.995) |
| Consultation group | ||||
| Bottom 90% | Reference category | |||
| Top 10% | 5.038 (5.007 to 5.068) |
5.603 (5.560 to 5.647) |
4.992 (4.917 to 5.068) |
5.253 (5.171 to 5.337) |
| IMD deprivation quintile | ||||
| 1 (least deprived) | Reference category | |||
| 2 | 1.005 (0.994 to 1.016) |
1.019 (1.005 to 1.033) |
0.993 (0.967 to 1.020) |
1.044 (1.015 to 1.073) |
| 3 | 1.048 (1.037 to 1.059) |
1.049 (1.035 to 1.063) |
1.038 (1.011 to 1.065) |
1.076 (1.047 to 1.106) |
| 4 | 1.019 (1.009 to 1.030) |
1.046 (1.032 to 1.060) |
0.981 (0.956 to 1.006) |
1.058 (1.030 to 1.087) |
| 5 (most deprived) | 1.025 (1.015 to 1.036) |
0.993 (0.980 to 1.006) |
0.997 (0.972 to 1.023) |
1.007 (0.981 to 1.035) |
| Region | ||||
| North East | Reference category | |||
| North West | 0.926 (0.899 to 0.953) |
0.995 (0.958 to 1.034) |
1.033 (0.961 to 1.111) |
0.985 (0.913 to 1.063) |
| Yorkshire and Humber | 0.952 (0.920 to 0.985) |
1.028 (0.984 to 1.075) |
1.023 (0.940 to 1.113) |
1.003 (0.918 to 1.096) |
| East Midlands | 0.898 (0.867 to 0.930) |
0.912 (0.872 to 0.955) |
0.963 (0.883 to 1.050) |
0.915 (0.835 to 1.002) |
| West Midlands | 0.840 (0.815 to 0.865) |
1.034 (0.994 to 1.074) |
1.074 (0.998 to 1.157) |
1.065 (0.986 to 1.150) |
| East of England | 0.853 (0.827 to 0.880) |
0.946 (0.909 to 0.985) |
1.012 (0.937 to 1.092) |
0.960 (0.886 to 1.040) |
| South West | 0.954 (0.926 to 0.983) |
1.085 (1.043 to 1.128) |
1.256 (1.166 to 1.353) |
1.080 (0.999 to 1.168) |
| South Central | 0.844 (0.819 to 0.870) |
0.952 (0.916 to 0.990) |
1.100 (1.021 to 1.186) |
1.052 (0.972 to 1.138) |
| London | 0.738 (0.716 to 0.760) |
0.922 (0.887 to 0.958) |
0.895 (0.832 to 0.964) |
0.918 (0.850 to 0.992) |
| South East Coast | 0.830 (0.805 to 0.855) |
0.928 (0.893 to 0.964) |
0.987 (0.918 to 1.063) |
1.000 (0.926 to 1.080) |
| Northern Ireland | 1.150 (1.115 to 1.187) |
1.446 (1.389 to 1.506) |
1.087 (1.006 to 1.174) |
1.128 (1.040 to 1.223) |
| Scotland | 0.785 (0.763 to 0.808) |
1.042 (1.004 to 1.081) |
1.249 (1.163 to 1.340) |
1.207 (1.121 to 1.300) |
| Wales | 0.883 (0.858 to 0.909) |
0.969 (0.934 to 1.006) |
1.045 (0.973 to 1.123) |
1.007 (0.934 to 1.086) |
GP, general practitioner; IMD, Index of Multiple Deprivation.