Appendix 4.
Simple and multiple logistic regression models of provision of Extended hours. Study group, clustered by PCT (n = 596, of which 405 providing extended hours)
| Logit: providing extended hours (yes/no) Simple relationships | Coefficient | Standard error | z | P>|z| | 95% CI |
|---|---|---|---|---|---|
| Satisfaction with hours 07/08 | -0.25 | 3.43 | -0.07 | 0.94 | -6.97 to 6.47 |
| Want before 8 am 07/08 | 13.83 | 21.87 | 0.63 | 0.53 | -29.03 to 56.70 |
| Want after 6.30 pm 07/08 | 8.72 | 9.04 | 0.97 | 0.34 | -8.99 to 26.44 |
| Want Saturday 07/08 | -6.85 | 3.54 | -1.94 | 0.05 | -13.78 to 0.08 |
| Want Lunchtime 07/08 | 13.83 | 21.87 | 0.63 | 0.53 | -29.03 to 56.70 |
| Want Sunday 07/08 | 91.49 | 32.15 | 2.85 | 0.004 | 28.48 to 154.50 |
| Satisfaction with hours 08/09 | 3.28 | 3.50 | 0.94 | 0.35 | -3.57 to 10.15 |
| Want extra hours 08/09 | -2.92 | 2.99 | -0.98 | 0.33 | -8.78 to 2.93 |
| Want before am 08/09 | 12.58 | 7.86 | 1.60 | 0.11 | -2.84 to 27.99 |
| Want after 6.30 pm 08/09 | 1.35 | 3.48 | 0.39 | 0.70 | -5.48 to 8.18 |
| Want Saturday 08/09 | -9.77 | 2.16 | -4.53 | <0.001 | -14.00 to-5.55 |
| Want Lunchtime 08/09 | 7.02 | 7.25 | 0.97 | 0.33 | -7.19to21.23 |
| Want Sunday 08/09 | 25.59 | 10.37 | 2.47 | 0.01 | 5.26 to 45.92 |
| Practice size | 0.00 | 0.00 | 1.15 | 0.25 | 0.00 to 0.00 |
| Index of Multiple Deprivation | 0.01 | 0.01 | 0.59 | 0.55 | -0.00 to 0.02 |
| QOF score | 0.00 | 0.00 | 1.27 | 0.20 | 0.00 to 0.01 |
| Change in satisfaction with opening hours | 7.16 | 2.85 | 2.51 | 0.01 | 1.58 to 12.74 |
| Percentage patients >45 years | -3.56 | 1.70 | -2.10 | 0.04a | -6.89 to-0.23 |
| Proportion UK graduate doctors | -0.42 | 0.25 | -1.67 | 0.09 | -0.91 to 0.07 |
| Change in satisfaction for QOF questions | 1.18 | 0.62 | 1.89 | 0.06 | -0.04 to 2.41 |
| QOF points realating to appointments 08/09 | 0.00 | 0.01 | -0.84 | 0.40 | -0.01 to 0.01 |
| Logit: providing extended hours (yes/no) Multiple regression — explanatory variables | Coefficient | Standard error | z | P>|z| | 95% CI |
| Satisfaction with opening hours 07/08 | 2.54 | 3.99 | 0.64 | 0.52 | -5.28 to 10.38 |
| Want before 8 am 07/08 | 8.58 | 16.05 | 0.53 | 0.59 | -22.87 to 40.04 |
| Want after 6.30 pm 07/08 | 11.64 | 6.21 | 1.87 | 0.06 | -0.55 to 23.82 |
| Want Saturday 07/08 | -4.28 | 5.38 | -0.80 | 0.43 | -14.82 to 6.26 |
| Want Sunday 07/08 | 85.05 | 39.49 | 2.15 | 0.03 | 7.66 to 162.45 |
| Practice size | 0.00 | 0.00 | 1.59 | 0.11 | 0.00 to 0.00 |
| Index of Multiple Deprivation | 0.00 | 0.01 | 0.11 | 0.91 | -0.02 to 0.03 |
| QOF score | 0.00 | 0.00 | 1.03 | 0.31 | 0.00 to 0.01 |
| Percentage patients >45 years | -2.24 | 2.23 | -1.00 | 0.32 | -6.61 to 2.14 |
| Proportion UK graduate doctors | -0.40 | 0.18 | -2.15 | 0.03a | -0.76 to-0.03 |
| _cons | -3.47 | 3.75 | -0.92 | 0.36 | -0.91 to 3.89 |
| Logit: providing extended hours (yes/no) Multiple regression — post hoc variables | Coefficient | Standard error | z | P>|z| | 95% CI |
| Satisfaction with opening hours 08/09 | 2.63 | 2.94 | 0.89 | 0.37 | -3.14 to 8.40 |
| Want extra hours | -1.00 | 4.46 | -0.22 | 0.82 | -9.74 to 7.74 |
| Want before 8 am 08/09 | 6.91 | 8.47 | 0.82 | 0.42 | -9.69 to 23.52 |
| Want after 6.30 pm 08/09 | 2.49 | 4.22 | 0.59 | 0.56 | -5.78 to 10.76 |
| Want Saturday 08/09 | -7.78 | 3.65 | -2.13 | 0.03 | -14.94 to-0.62 |
| want lunchtime 08/09 | 1.44 | 5.13 | 0.28 | 0.78 | -8.62 to 11.49 |
| Want Sunday 08/09 | 25.33 | 10.73 | 2.36 | 0.02 | 4.30 to 46.35 |
| Change in satisfaction with opening hours | 7.50 | 3.48 | 2.15 | 0.03 | 0.68 to 14.32 |
| Change in satisfaction for QOF questions | 0.96 | 0.93 | 1.04 | 0.30 | -0.68 to 2.78 |
| QOF points relating to appointments 08/09 | -0.01 | 0.01 | -1.78 | 0.08 | -0.03 to 0.00 |
| _cons | 0.99 | 2.48 | 0.40 | 0.69 | -3.87 to 5.84 |
Significant relationships shown in bold.
a
Proportion of patients over 45 years and graduate doctors are not consistently significant in simple and multiple regressions and these results should be interpreted with caution.