Patient characteristics (number (%))
| Norwegian PSC patients | Norwegian controls | British PSC patients | British controls | |
| n | 110 | 110 | 50 | 35 |
| Male | 81 (73) | 77 (70) | 33 (66) | 24 (69) |
| Mean age at presentation (y) | 28.7 (10–73) | 47.7 (17–78) | ||
| Mean follow up period (months) | 141 | 67 | ||
| Dead | 20 (18) | 4 (8) | ||
| Cholangiocarcinoma | 13 (12) | 2 (4) | ||
| Liver transplanted | 19 (17) | 2 (4) | ||
| Concurrent IBD | 94 (85) | 43 (86) | ||
| No concurrent IBD | 16 (15) | 7 (14) |
PSC, primary sclerosing cholangitis; IBD, inflammatory bowel disease.