Poisson regression modelling of IPF incidence
| Mutually adjusted incidence rate ratios (95% CI) | |
|---|---|
| All incidence rate ratios are mutually adjusted for all other variables in the table. | |
| *p for trend. | |
| Sex | |
| Women | 1.00 |
| Men | 2.13 (1.87 to 2.44), p<0.0001 |
| Calendar period | |
| 1991–1995 | 1.00 |
| 1996–1999 | 1.36 (1.12 to 1.66) |
| 2000–2003 | 2.39 (2.01 to 2.84), p<0.0001* |
| Age group (years) | |
| <55 | 1.00 |
| 55–64.9 | 13.50 (10.33 to 17.65) |
| 65–74.9 | 33.44 (26.07 to 42.89) |
| 75–84.9 | 51.91 (40.49 to 66.55) |
| >85 | 49.91 (36.60 to 68.07), p<0.0001* |
| Region | |
| North East | 1.84 (1.29 to 2.62) |
| North West | 1.90 (1.49 to 2.41) |
| Yorkshire and Humber | 1.11 (0.76 to 1.64) |
| East Midlands | 1.30 (0.93 to 1.83) |
| West Midlands | 1.60 (1.24 to 2.08) |
| East | 1.44 (1.09 to 1.89) |
| London | 1.34 (1.03 to 1.73) |
| South East | 1.00 |
| South West | 1.42 (1.08 to 1.87) |
| Northern Ireland | 1.18 (0.75 to 1.86) |
| Wales | 1.63 (1.22 to 2.17) |
| Scotland | 1.85 (1.38 to 2.48), p<0.0001 |