Summary of results from previous studies reporting on the association between measles vaccine and Crohn’s disease and ulcerative colitis; and comparison with the ORLS study reported in this paper
| Study | Crohn’s disease | Ulcerative colitis | ||
|---|---|---|---|---|
| Relative risk* | 95% Confidence interval | Relative risk* | 95% Confidence interval | |
| *Odds ratios from case-control studies. | ||||
| Hypothesis generating | ||||
| Thompson et al (1995)2 | 3.01 | 1.5 to 6.3 | 2.53 | 1.2 to 5.6 |
| Hypothesis testing | ||||
| Feeney et al (1997)3 | 1.08* | 0.6 to 1.9 | 0.97* | 0.6 to 1.6 |
| Morris et al (2000)4 | 0.67 | 0.3 to 1.6 | 0.57 | 0.2 to 1.6 |
| Davies et al (2001)5 | 1.11* | 0.3 to 4.7 | 1.05* | 0.2 to 5.4 |
| The three studies | 0.95 | 0.6 to 1.5 | 0.92 | 0.6 to 1.4 |
| ORLS study (45% vaccinated) | 0.91 | 0.5 to 1.4 | 1.09 | 0.5 to 1.8 |