Brief Article
Copyright ©2012 Baishideng Publishing Group Co.
World J Gastroenterol. Nov 21, 2012; 18(43): 6240-6249
Published online Nov 21, 2012. doi: 10.3748/wjg.v18.i43.6240
Table 2 Demographics of synthesised studies
Ref.DateCountryAge rangeGenderDiseaseDisease durationSample size
Dudley-Brown[17]1996United States30-50 yr1 female; 2 male3 ulcerative colitis1-10 yr3
Daniel et al[51]2001Canada18-24 yr2 female; 3 maleIBD not specified< 2 yr5
Hall et al[50]2005United KingdomNot specified but all > 16 yr19 female; 12 male14 Crohn’s disease; 17 ulcerative colitisNot specified but all > 2 yr31
Burger et al[38]2005United States30-65 yr6 female; 2 male6 Crohn’s disease; 2 ulcerative colitis2-40 yr8
Lynch et al[53]2007New Zealand16-21 yr3 female; 1 maleAll Crohn’s disease< 18 mo4
Pihl-Lesnovska et al[52]2010Sweden29-83 yr5 female; 6 maleAll Crohn’s disease2-33 yr11
Cooper et al[54]2010United Kingdom30-40 yr11 female; 13 male12 Crohn’s disease; 12 ulcerative colitis1- > 10 yr24