Volume within 150 m | Unadjusted | Adjusted for age, sex, hospital and deprivation |
<1500 | 1.0 | 1.0 |
1500–14 999 | 1.06 (0.90 to 1.24) | 1.03 (0.87 to 1.22) |
15 000–49 999 | 0.86 (0.73 to 1.00) | 0.80 (0.68 to 0.95) |
50 000+ | 0.93 (0.79 to 1.11) | 0.88 (0.74 to 1.06) |
Statistical tests: | ||
Heterogeneity (3 df) | χ2= 6.83; p = 0.08 | χ2 = 10.4; p = 0.02 |
Trend (1 df) | χ2 = 2.38; p = 0.12 | χ2 = 3.58; p = 0.06 |