Table 1. Categorization of hospital reporting completeness (groups 1 – 4) expressed as the ratio of colonoscopies in the National Patient Register (NPR) that are also reported to Gastronet.
| Hospital | Group 1, < 50 % completeness | Group 2, 50 – 69 % completeness | Group 3, 70 – 89 % completeness | Group 4, ≥ 90 % completeness | Total |
| Skien | 1216/1550 (79) | ||||
| Tønsberg + Larvik | 1694/3023 (56) | ||||
| Kristiansand | 1552/1649 (94) | ||||
| Arendal | 1092/1199 (91) | ||||
| Notodden | 587/801 (73) | ||||
| Flekkefjord | 216/278 (78) | ||||
| Fredrikstad | 1114/1149 (97) | ||||
| Kongsberg | 475/481 (99) | ||||
| Moss | 668/701 (95) | ||||
| Stavanger | 1194/2236 (53) | ||||
| Kragerø | 1224/1274 (96) | ||||
| Bærum | 1336/1560 (86) | ||||
| Molde | 938/932 (101) | ||||
| Volda | 245/614 (40) | ||||
| Diakonhjemmet | 324/1174 (28) | ||||
| Kristiansund | 753/730 (103) | ||||
| Drammen | 188/1440 (13) | ||||
| Harstad | 552/673 (82) | ||||
| Namsos | 128/421 (30) | ||||
| Stord | 359/479 (75) | ||||
| Total | 885/3649 (24) | 2888/5259 (55) | 4266/5341 (80) | 7816/8115 (96) | 15 855/22 364 (71) |