ORs with 95% CIs for sporadic infection with Legionnaires' disease by distance from the nearest wet cooling systems (grouped)
| Distance band (km) | ORs (95% CIs) | ||
| Unadjusted | Adjusted for deprivation | Adjusted for deprivation and population density | |
| 0– | 1.94 (1.48 to 2.56) | 1.59 (1.26 to 2.01) | 1.33 (1.04 to 1.71) |
| 1– | 1.83 (1.44 to 2.32) | 1.60 (1.25 to 2.06) | 1.36 (1.01 to 1.83) |
| 2– | 1.82 (1.28 to 2.57) | 1.77 (1.28 to 2.45) | 1.53 (1.18 to 2.00) |
| 3– | 1.16 (0.81 to 1.67) | 1.19 (0.82 to 1.74) | 1.08 (0.73 to 1.62) |
| 4– | 1.41 (0.99 to 2.00) | 1.47 (1.05 to 2.06) | 1.42 (1.02 to 1.99) |
| 5– | 1.02 (0.70 to 1.49) | 1.06 (0.72 to 1.56) | 1.04 (0.71 to 1.53) |
| ≥6 km | 1.00 | 1.00 | 1.00 |
| OR at 0 km compared with 6 km (based on natural cubic spline) | |||
| 1.81 (1.54 to 2.13) | 1.30 (1.12 to 1.51) | 1.24 (1.03 to 1.49) | |