Haugeberg, et al (2003)15 | Norway (North & West) | ACR criteria | 1992–1996 | 32.4 |
Baldursson, et al (1994)16 | Iceland (Nationwide) | ACR criteria | 1984–1990 | 27.0 |
Nordborg, et al (2003)17 | Sweden (Gothenburg) | Biopsy proven | 1976–1995 | 22.2 |
Smeeth, et al (2006)18 | UK (Nationwide) | Clinical criteria | 1990–2001 | 22.0† |
Elling, et al (1996)19 | Denmark (Nationwide) | Biopsy proven | 1982–1994 | 20.4 |
Kermani, et al (2010)9 | USA (Minnesota) | ACR criteria | 2000–2004 | 18.9 |
Gonzalez-Gay, et al (2007)20 | Spain (Lugo) | Biopsy proven | 2001–2005 | 12.9 |
Abdul-Rahman, et al (2011)21 | New Zealand (Otago) | Biopsy proven | 1996–2005 | 12.7 |
Bas-Lando, et al (2007)22 | Israel (Jerusalem) | Biopsy proven or ACR criteria | 1980–2004 | 11.3 |
Ramstead and Patel (2007)23 | Canada (Saskatoon) | Biopsy proven | 1998–2003 | 9.4 |
Barrier, et al (1982)24 | France (Loire-Atlantique) | Biopsy proven or clinical features | 1970–1979 | 9.4‡ |
Salvarani, et al (1991)25 | Italy (Reggio Emilia) | Biopsy proven or clinical features | 1980–1988 | 6.9 |
Dunstan, et al (2014)26 | Australia (South Australia) | Biopsy proven | 1992–2011 | 3.2 |
Pamuk, et al (2009)27 | Turkey (Northwest) | ACR criteria | 2002–2008 | 1.1 |