Table 1.
Equity rate ratios for access to care to hip replacement. Figures are adjusted rate ratios (95% confidence intervals)
| Sociodemographic model | Full model | |
|---|---|---|
| Sociodemographic characteristics | ||
| Age group (years): | ||
| 50-59 | 1.00 | 1.00 |
| 60-69 | 2.78 (2.69 to 2.87) | 2.78 (2.69 to 2.87) |
| 70-79 | 2.43 (2.35 to 2.51) | 2.43 (2.35 to 2.51) |
| 80-84 | 1.64 (1.57 to 1.71) | 1.64 (1.57 to 1.71) |
| ≥85 | 0.68 (0.64 to 0.72) | 0.68 (0.65 to 0.72) |
| P linear trend | <0.001 | <0.001 |
| Sex: | ||
| Female | 1.00 | 1.00 |
| Male | 1.08 (1.05 to 1.10) | 1.08 (1.05 to 1.10) |
| Index of multiple deprivation 2004*: | ||
| 1 (least deprived) | 1.00 | 1.00 |
| 2 | 0.73 (0.71 to 0.76) | 0.73 (0.71 to 0.76) |
| 3 | 0.55 (0.53 to 0.57) | 0.55 (0.53 to 0.57) |
| 4 | 0.43 (0.42 to 0.45) | 0.44 (0.42 to 0.46) |
| 5 (most deprived) | 0.30 (0.29 to 0.32) | 0.31 (0.30 to 0.33) |
| P linear trend | <0.001 | <0.001 |
| Ethnic mix of area: | ||
| White | 1.00 | 1.00 |
| Non-white | 0.99 (0.96 to 1.02) | 1.01 (0.97 to 1.04) |
| Rurality: | ||
| Urban (≥10 000) | 1.00 | 1.00 |
| Town and fringe | 0.97 (0.93 to 1.01) | 0.94 (0.91 to 0.98) |
| Village/isolated | 1.19 (1.15 to 1.24) | 1.16 (1.12 to 1.22) |
| P linear trend | <0.001 | <0.001 |
| Hospital trust characteristics | ||
| No of hip operations/year/hospital trust*: | ||
| 1 (1-234) | NA | 1.00 |
| 2 (238-308) | NA | 1.12 (1.06 to 1.17) |
| 3 (310-389) | NA | 1.08 (1.03 to 1.14) |
| 4 (396-564) | NA | 1.09 (1.04 to 1.15) |
| 5 (570-1076) | NA | 1.13 (1.06 to 1.20) |
| P linear trend | — | 0.001 |
| Orthopaedic training centre status: | ||
| No | NA | 1.00 |
| Yes | NA | 1.04 (0.99 to 1.09) |
| Rate of all consultants per 100 000*: | ||
| 1 (4.18-29.95) | NA | 1.00 |
| 2 (30.15-34.27) | NA | 0.90 (0.85 to 0.95) |
| 3 (34.35-38.09) | NA | 0.92 (0.87 to 0.97) |
| 4 (38.98-46.07) | NA | 0.86 (0.81 to 0.92) |
| 5 (46.15-550.18) | NA | 0.80 (0.74 to 0.86) |
| P linear trend | — | <0.001 |
| Rate of trauma and orthopaedic consultants per 100 000*: | ||
| 1 (1.35-2.05) | NA | 1.00 |
| 2 (2.06-2.41) | NA | 1.02 (0.96 to 1.07) |
| 3 (2.41-2.75) | NA | 1.08 (1.02 to 1.14) |
| 4 (2.76-3.11) | NA | 1.01 (0.96 to 1.07) |
| 5 (3.11-13.72) | NA | 1.07 (1.02 to 1.14) |
| P linear trend | — | 0.008 |
| Rate of operating theatres per 100 000*: | ||
| 1 (0.00-3.62) | NA | 1.00 |
| 2 (3.63-4.46) | NA | 1.05 (0.99 to 1.10) |
| 3 (4.50-5.03) | NA | 1.05 (0.99 to 1.12) |
| 4 (5.07-5.97) | NA | 1.10 (1.03 to 1.17) |
| 5 (6.08-42.42) | NA | 1.11 (1.03 to 1.19) |
| P linear trend | — | 0.002 |
| Measures of distance to hospital (road travel times in minutes)*: | ||
| 1 (1.79-12.85) | NA | 1.00 |
| 2 (12.86-20.07) | NA | 1.03 (0.99 to 1.06) |
| 3 (20.08-30.10) | NA | 1.05 (1.01 to 1.09) |
| 4 (30.11-45.89) | NA | 1.11 (1.06 to 1.16) |
| 5 (45.91-225.76) | NA | 1.11 (1.05 to 1.17) |
| P linear trend | — | <0.001 |
NA=variable not included in multivariable model.
*Fifths of distribution.