Mortality in the total cohort of 920 patients with IBD (overall follow up 9940 person years) by major groups of diagnostic categories
| Cause of death | ICD IX | No of deaths observed | No expected | SMR | 95% CI |
| Neoplasms | 140–208 | 23 | 28.28 | 0.81 | 0.5 to 1.2 |
| Cardiovascular diseases | 390–459 | 22 | 37.23 | 0.59 | 0.4 to 0.9 |
| Respiratory diseases | 460–519 | 0 | 5.5 | – | – |
| Gastrointestinal diseases | 520–579 | 13 | 6.23 | 2.09 | 1.1 to 3.6 |
| Violent causes | 800–998 | 4 | 5.41 | 0.74 | 0.2 to 1.9 |
| Other causes1-150 | 8 | 9.36 | 0.85 | 0.4 to 1.7 | |
| All deaths | 001–999 | 70 | 92.01 | 0.76 | 0.6 to 0.96 |
↵1-150 Including infectious disease, diabetes (n=2), arthritis, AIDS, renal failure and two ill defined causes.
SMR, standardised mortality ratio; CI, confidence interval.