Unadjusted and adjusted geometric mean cause-specific survival time ratios and their 95% CI for each health region versus region A
| Unadjusted | Case mix* adjusted | % excess/reduced time explained by case mix† | Deprivation quintile and case mix adjusted | Immigration and case mix adjusted | Rurality and case mix adjusted | % excess/reduced time explained by rurality† | |
| Health region | |||||||
| A | Reference | Reference | Reference | Reference | Reference | ||
| B | 0.88 (0.69 to 1.11) | 0.82 (0.68 to 0.99)‡ | 0.82 (0.68 to 0.99) | 0.82 (0.68 to 0.99) | 0.83 (0.68 to 1.02) | ||
| C | 0.74 (0.58 to 0.93) | 0.82 (0.68 to 0.99) | 46% explained | 0.82 (0.68 to 0.99) | 0.82 (0.68 to 0.99) | 0.86 (0.71 to 1.04) | 22% explained |
| D | 1.34 (1.01 to 1.78) | 1.15 (0.92 to 1.44) | 56% explained | 1.15 (0.92 to 1.45) | 1.15 (0.92 to 1.44) | 1.13 (0.90 to 1.41) | |
| E | 1.25 (0.86 to 1.81) | 1.21 (0.90 to 1.62) | 1.19 (0.88 to 1.61) | 1.21 (0.90 to 1.62) | 1.19 (0.87 to 1.62) | ||
| F | 0.81 (0.64 to 1.04) | 0.96 (0.79 to 1.16) | 0.96 (0.79 to 1.16) | 0.95 (0.79 to 1.16) | 0.97 (0.79 to 1.18) | ||
| G | 1.18 (0.96 to 1.44) | 1.17 (1.00 to 1.37) | 1.18 (1.00 to 1.38) | 1.17 (1.00 to 1.37) | 1.18 (1.00 to 1.38) | ||
| H | 1.12 (0.88 to 1.44) | 1.06 (0.88 to 1.29) | 1.03 (0.84 to 1.25) | 1.07 (0.88 to 1.30) | 1.06 (0.87 to 1.29) | ||
| I | 1.07 (0.86 to 1.33) | 0.94 (0.79 to 1.12) | 0.92 (0.78 to 1.09) | 0.94 (0.79 to 1.12) | 0.95 (0.79 to 1.13) | ||
| J | 1.39 (1.13 to 1.71) | 1.29 (1.09 to 1.51) | 26% explained | 1.29 (1.09 to 1.52) | 1.28 (1.09 to 1.51) | 1.27 (1.08 to 1.50) | |
| K | 1.07 (0.82 to 1.41) | 1.18 (0.95 to 1.46) | 1.18 (0.95 to 1.46) | 1.18 (0.95 to 1.46) | 1.19 (0.95 to 1.49) | ||
| L | 0.96 (0.76 to 1.21) | 1.00 (0.83 to 1.20) | 1.01 (0.84 to 1.21) | 1.00 (0.84 to 1.20) | 0.98 (0.82 to 1.18) | ||
| M | 1.30 (1.03 to 1.65) | 1.35 (1.12 to 1.63) | 1.32 (1.09 to 1.60) | 1.35 (1.12 to 1.63) | 1.32 (1.09 to 1.59) | ||
| N | 1.12 (0.91 to 1.37) | 1.04 (0.88 to 1.22) | 1.01 (0.86 to 1.20) | 1.04 (0.88 to 1.22) | 1.03 (0.87 to 1.22) |
*Case mix variables included colon cancer subsite, age, sex, stage at diagnosis, presence of GI comorbidity and number of major ADGs.
†Computed for health regions with statistically significant different survival than region A in unadjusted model and reported when the % change from unadjusted model (for mediation by case mix) or case mix adjusted model (for mediation by deprivation, immigration and rurality) was at least 10%. The % change did not reach the 10% threshold in the models analysing mediation by deprivation index and immigration.
‡p<0.05 for bolded survival time ratios.
ADGs, Aggregated Diagnostic Groups; GI, gastrointestinal.