Irritable Bowel Syndrome - Epidemiology


Studies have reported that the prevalence of IBS varies by country and by age range examined. The bar graph at right shows the percentage of the population reporting symptoms of IBS in studies from various geographic regions (see table below for references).

The following table contains a list of studies performed in different countries that measured the prevalence of IBS and IBS-like symptoms:

Percentage of population reporting symptoms of IBS in various studies from various geographic areas
Country Prevalence Author/Year Notes
Canada 6% Boivin, 2001
Japan 10% Quigley, 2006 Study measured prevalence of GI abdominal pain/cramping
United Kingdom 8.2%


Ehlin, 2003

Wilson, 2004

Prevalence increased substantially 1970–2004
United States 14.1% Hungin, 2005 Most undiagnosed
United States 15% Boivin, 2001 Estimate
Pakistan 14% Jafri, 2007 Much more common in 16–30 age range. Of IBS patients, 56% male, 44% female
Pakistan 34% Jafri, 2005 College students
Mexico City 35% Schmulson, 2006 n=324. Also measured functional diarrhea and functional vomiting. High rates attributed to "stress of living in a populated city."
Brazil 43% Quigley, 2006 Study measured prevalence of GI abdominal pain/cramping
Mexico 46% Quigley, 2006 Study measured prevalence of GI abdominal pain/cramping

A study of United States residents returning from international travel found a high rate of IBS and persistent diarrhea that developed during travel and persisted upon return. The study examined 83 subjects in Utah, most of whom were returning missionaries. Of the 68 who completed the gastrointestinal questionnaire, 27 reported persistent diarrhea that developed while traveling, and 10 reported persistent IBS that developed while traveling.

Read more about this topic:  Irritable Bowel Syndrome

Other articles related to "epidemiology":

Seborrheic Keratosis - Epidemiology
... Onset is usually in middle age although a common finding in younger patients - found in 12% of 15-year-olds to 25-year-olds making the term "senile keratosis" redundant ... No difference in prevalence exists between genders ...
Michael Osterholm - Career
... of Health (MDH), including as state epidemiologist and Chief of the Acute Disease Epidemiology Section from 1984 to 1999 ... the departments role in infectious disease epidemiology, notably including numerous foodborne disease outbreaks, the association between tampons and toxic shock ... Other work included studies regarding the epidemiology of infectious diseases in child-care settings, vaccine-preventable diseases (particularly Haemophilus influenzae type b and hepatitis B), Lyme disease, and ...
Val Beral - Honours and Awards
... by the London School of Hygiene and Tropical Medicine for her ground-breaking work in cancer epidemiology and women’s health, most notably through the Million Women study, as ... Fellow of the Royal Society – for scientific contributions to epidemiology ... significant advances in cancer research and epidemiology, through seminal contributions to public health policy and as a mentor to young scientists." ...
Infection Control And Hospital Epidemiology
... Infection Control and Hospital Epidemiology is a peer-reviewed medical journal published by the University of Chicago Press ... The journal is published for the Society for Healthcare Epidemiology of America ...
Epidemiology - Areas
... By physiology/disease Infectious disease epidemiology Occupational Injury Illness epidemiology Cardiovascular disease epidemiology Cancer epidemiology Neuroepidemiology Epidemiology of Aging Oral/Dental epidemiology ...