Table 1 Crohn's disease related mortality from selected population‐based cohorts published since 1992.
| Author (ref) | Location | Cohort type | Study period | No | Median or mean follow up (y) | Overall SMR (95% CI) |
|---|---|---|---|---|---|---|
| Ekbom1 | Uppsala, Sweden | Incidence (89%) and prevalence (11%) | 1965–83 | 1655 | NA | 1.6 (1.4–1.9) |
| Probert5 | Leicestershire, UK | Incidence | 1972–89 | 610 | NA | 0.7 (0.5–1.0) |
| Persson2 | Stockholm County, Sweden | Incidence | 1955–84 | 1251 | NA | 1.5 (1.3–1.7) |
| Jess3 | Copenhagen County, Denmark | Incidence | 1962–87 | 374 | 17 | 1.3 (1.0–1.6) |
| Card8 | GPRD, UK | Incidence (31%) and prevalence (69%) | 1987–?? | 5960 | 3.6 | 1.7 (1.5–2.0) |
| Masala4 | Florence, Italy | Incidence | 1978–92 | 231 | 15.4 | 1.5 (1.1–2.1) |
| Jess6 | Olmsted County, USA | Incidence | 1940–2001 | 314 | 13 | 1.2 (0.9–1.6) |
| Wolters12 | EC‐IBD, Europe and Israel | Incidence | 1991–93 | 371 | 10 | 1.9 (1.3–2.5) |
SMR, standardised morbidity ratio (observed/expected); 95% CI, 95% confidence interval; NA, not available; EC‐IBD, European Collaborative Study Group of Inflammatory Bowel Disease.