Regression modelling for breast screening coverage among women aged 50–64 years
| Model | Univariate | Population | General practice | Population and general practice | |||||
|---|---|---|---|---|---|---|---|---|---|
| Deviance explained by model | – | 70.7% | 31.0% | 70.6% | |||||
| OR (95% CI) | p Value (Wald, χ2) | Deviance explained, % | OR (95% CI) | p Value (Wald, χ2) | OR (95% CI) | p Value (Wald, χ2) | OR (95% CI) | p Value (Wald, χ2) | |
| Population factors | |||||||||
| Urbanisation, % | 0.992 (0.991 to 0.993) | <0.001 | 50.5 | 0.996 (0.995 to 0.998) | <0.001 | – | 0.996 (0.995 to 0.998) | <0.001 | |
| London SHA (Q36) | 0.642 (0.587 to 0.703) | <0.001 | 37.7 | 0.896 (0.811 to 0.990) | 0.03 | – | 0.885 (0.806 to 0.970) | 0.009 | |
| Deprivation, % | 0.972 (0.967 to 0.978) | <0.001 | 38.8 | 0.991 (0.986 to 0.997) | 0.002 | _ | 0.991 (0.985 to 0.997) | 0.004 | |
| Asian, black or mixed ethnicity, % | 0.987 (0.985 to 0.989) | <0.001 | 49.1 | 0.999 (0.996 to 1.002) | NS (0.5) | – | – | ||
| ‘Other’ ethnicity, % | 0.880 (0.863 to 0.898) | <0.001 | 50.8 | 0.948 (0.923 to 0.973) | <0.001 | – | 0.945 (0.922 to 0.969) | <0.001 | |
| No higher education, % | 1.010 (1.001 to 1.019) | NS (0.03) | 3.1 | – | – | – | |||
| General practice factors | |||||||||
| Average practice list size | 1.00 010 (1.00 007 to 1.00 012) | <0.001 | 26.5 | – | 1.000 046 (1.000 006 to 1.000 087) | 0.03 | 1.00 001 (0.99 998 to 1.00 003) | 0.6 | |
| Single-handed practices, % | 0.988 (0.984 to 0.991) | <0.001 | 24.2 | – | 0.9945 (0.9886 to 1.0004) | NS (0.07) | – | ||
| Practitioner headcount per 105 population | 0.996 (0.991 to 1.001) | NS (0.1) | 1.7 | – | – | – | |||
| Practice staff FTE | 1.00 025 (1.00 015 to 1.00 035) | <0.001 | 14.1 | – | 1.000 099 0.999 990 to 1.000 209) | NS (0.07) | – | ||
| Practitioners qualified outside UK, % | 0.993 (0.990 to 0.995) | <0.001 | 16.0 | – | 0.9992 (0.9957 to 1.0027) | NS (0.6) | – | ||
FTE, full-time equivalent; NS, considered non-significant (see Methods section for details); SHA, strategic health authority.