Systematic Reviews
Copyright ©The Author(s) 2018.
World J Gastroenterol. Jan 21, 2018; 24(3): 424-437
Published online Jan 21, 2018. doi: 10.3748/wjg.v24.i3.424
Table 3 Prevalence of ulcerative colitis: Study characteristics and comparison between population groups
Study characteristicsStudy quality characteristics
StudyCountry (region)Study periodNumber of casesPrevalence rate, cases/100000Diagnosis based on recognised criteriaEthnicity reporting methodSample frame

SAAsianCaucasianBlackHispanic

Probert (1993)[18]United Kingdom (Leicester)1989888136.0-90.8--YesSelf-reportedPopulation
Wang (2013)[20]United States (National database)1996-2007108-40.089.02535NoSelf-reportedPopulation
SAMalayChineseBlackHispanic
Lee (2000)[21]Singapore (Singapore)1985-19965816.27.06.0--YesSelf-reportedHospital