Table 1.
Characteristics of the 17 population based cohorts included. Y, year.
| Cohort | Country | Study period and follow-up | UC Population | References |
|---|---|---|---|---|
| Multicentric European (EC-IBD) | Greece, Israel, Italy, Spain, Denmark, Netherlands, Norway | Diagnosis between 1991 and 1993; follow-up ranging from 4 to 10 y | 328 to 781 | 9,19, 25,38,57,64,73 |
| Copenhagen County | Denmark | Diagnosis ranging from 1962 to 2005; follow-up ranging from 1 to 19 y | 87 to 1160 | 10,23,24,26,43 |
| North-Jutland County | Denmark | Diagnosis between 1978 and 2002; follow-up: 15 y | 1575 | 30 |
| IBSEN cohort | Norway | Diagnosis between 1990 and 1993; follow-up ranging from 5 to 20 y | 328 to 519 | 15,18,36,37 54,56,58,65,68 |
| Veszprem province | Hungary | Diagnosis between 1974 to 2012; follow-up ranging from 5 to 13 y | 220 to 1060 | 13,27,33,44,74,76 |
| Malmo | Sweden | Diagnosis between 1958 and 1982, median follow-up: 15 y | 471 | 22,32,75 |
| Stockholm county | Sweden | Diagnosis between 1955 and 1984; follow-up ranging from 13 to 16.5 y | 1547 to 1586 | 17,28,47,63 |
| Uppsala Region | Sweden | Cohort 1.Diagnosis between 1922 and 1983 Cohort 2. Diagnosis between 2005 and 2009; follow-up ranging from 1 to 11 y | 496 to 3117 | 17,21,41,69 |
| Florence Area | Italia | Diagnosis between 1978 and 1992; follow-up ranging from 11 to 15 y | 689 | 48,60 |
| Dutch IBD-South Limburg cohort | The Netherlands | Diagnosis between 1991 and 2010; follow up ranging from 3 to 17 y | 368 to 1161 | 16,35,52,59 |
| Area of Tampere University Hospital | Finland | Study period between 1986–2007 (diagnosis period not defined); follow-up of 13y | 1254 | 46,61 |
| Olmsted County | USA | Diagnosis ranging from 1940 to 2011; follow-up ranging from 1 to 21 y | 63 to 462 | 12,40,45,49,62,66,67,71 |
| Manitoba IBD cohort | Canada | Diagnosis after 1995; follow-up up to 12.3 y | 45 to 158 | 51,55,61 |
| Asia-Pacific Crohn’s and Colitis Epidemiology Study | China, Hong Kong, Indonesia, Sri Lanka, Macau, Malaysia, Singapore, Thailand and Australia | Diagnosis between 2011 and 2013; follow-up 1.5 y | 222 | 14 |
| Barwon area | Australia | Diagnosis between 2007–2008 and 2010–2013; follow-up of 1.5 y | 96 | 11 |
| ECCO-EPICOM cohort | European Multicentric (14 countries, 31 centers) | Diagnosis in 2011, follow-up of 1 y | 575 to 710 | 20,53 |
| Oberpfalz, Bavaria | Germany | Diagnosis between 2004 and 2009, follow-up > 1 y | 90 | 70 |