Reported annual incidence of collagenous colitis (CC) and lymphocytic colitis (LC) per 105 inhabitants in population based epidemiological studies
| Region and years | CC | LC |
|---|---|---|
| Örebro, Sweden, 1984–887 | 0.8 | |
| Örebro, Sweden, 1989–937 | 2.7 | |
| Örebro, Sweden, 1993–95 (present study) | 3.7 | 3.1 |
| Örebro, Sweden, 1996–98 (present study) | 6.1 | 5.7 |
| Franche-Comté, France, 1987–928 | 0.6 | |
| Uppsala, Sweden, 1992–949 | 1.9 | |
| Terrassa, Spain, 1993–9710 | 2.3 | 3.7 |
| Iceland 1995–9911 | 5.2 | 4.0 |