Table 1

Studies of CD age and sex distribution and proportion of total, where isolated colonic CD separately identified (in approximate median date order)

Authors/refCountryYears analysedNumber of cases all CDAll CD % femaleIsolated colonic CD as % of total CDIsolated colonic CD % femaleCD excluding
Isolated
colonic
% female
(calculated)
Median age at presentation
(colonic CD)
Unspecified or indeterminate
as ratio to colonic CD in same series
Cornes and Stecher10UK19611314634603841–50
Gollop et al39USA1943–19821036436686225–34
Loftus et a40USA1940–19932255432
Humphreys et al41UK1966–19814405840
Ekbom et al42Sweden1965–19831469532533 (mean)
Kyle35UK1955–19888566341636340–49
Kyle35UK1964–196912230
Kyle35UK1970–197516740
Kyle35UK1976–198120446
Kyle35UK1982–198726354
Lapidus et al37Sweden1955–1959836114
1960–19641454815
1965–19692705121
1970–19743645326
1975–19793315426
1980–19843485832
1985–19893954932
Gunesh et al36UK (Cardiff)1950–19604013
Gunesh et al36UK (Cardiff)1960–19708917
Gunesh et al36UK (Cardiff)1970–198014834
Gunesh et al36UK (Cardiff)1980–199021738
Yapp et al43UK (Cardiff)1991–1995846843
Gunesh et al36UK (Cardiff)1996–200521261436855
Jayanthi et al44UK1972–19892355025
(increase from 1972 to 89)
Cottone et al 45Italy1975–199588218
Jacobsen et al46Denmark1978–198719667 (1978–87)32
Jacobsen et al46Denmark1988–199735467 (1978–87)42
Jacobsen et al46Denmark1998–200223067 (1978–87)51
Wright et al 47South Africa1980–198413469270.44
Manninen et al48Finland1986–19994705040% 1986
31% 1999
0.56
Economou et al49Greece1983–200510537400.40
Rhodes et al50UK19843955522725028 (subset)
Gower-Rousseau et al51France19946745719281.15
Auvin et al52France1988–1999367
(<17 years)
47100.54
Spanish Epidemiological and Economic Study Group on CD53Spain19976355217
Jess et al54Denmark1962–19873745830
Jess et al54Denmark1991–1993586643
Jess et al54Denmark2003–20042095437
Chow et al31China1987–20051092935
Chouraki et al38France1988–2007740956110.90
Chouraki et al38France1988–199054423
Chouraki et al38France1997–1999104413
Chouraki et al38France2006–20075335
Romberg-Camps et al55The Netherlands1991–20034766127665934 (mean)0.63
Bjornsson et al56Iceland1995–200927954550.08
Tozun et al57Turkey2001–20032164426
Lakatos et al58Hungary2002–20061634836
Nguyen et al59USA/Canada2003–2005579190.30
Ott et al60Germany2004–200616855180.43
Siddique et al61Kuwait2005–20062065214
Chen et al62USA2005–201062855215056
Lucendo et al63Spain2000–201259949240.10
Henckaerts et al64Belgium2007874170.03
Herrinton et al65USA200894855400.10
Hancock et al66UK20086756220 (‘enriched’)745931 (mean)
Aloi et al67Italy2009–201310
(<5 years)
50
Aloi et al67Italy2009–2013215
(6–18 years)
151.00
Aljebreen et al68Saudi2009–2013497418
Burisch et al69Western Europe201034548261.19
Burisch et al69Eastern Europe20109941200.30
Eglinton et al70New Zealand20115076342
Ng et al71Asia-Pacific2011–2012166Asia 39%
Australia 52%
240.53
Cleynen et al1716 countries201516 90256240.06
  • CD, Crohn's disease.