Irritable bowel syndrome epidemiology and demographics: Difference between revisions
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==Epidemiology and Demographics== | ==Epidemiology and Demographics== | ||
IBS is an extremely common disorder in the population. | |||
In USA and Australia, 1 in every 10 people fulfil the Rome Ⅲ criteria for IBS, although most of them tend to go undiagnosed. IBS is underdiagnosed in Asian countries where risk factors for infection and dietary patterns are undergoing change. | |||
In the Western pediatric population, IBS is the commonest cause of functional RAP as it accounts for more than 50% of all cases. | |||
Gender- | |||
There is a female predominance of IBS in the west, as compared to the east. This is mostly due to a combination of social and biological factors. | |||
The likelihood of diagnosis is 2-3 times more in women as compared to men. | |||
Health care seeking behavior for symptoms is 4-5 times higher in women as compared to men. | |||
It has been postulated that hormonal factors are an important risk factor for IBS, with the fluctuation of sex hormones causing exacerbation of symptoms. | |||
Women are more commonly victims of sexual abuse as compared to men. Sexual abuse is a major risk factor of IBS and 33 in every 100 patients have been found to report history of abuse. | |||
Women have a lower threshold for pain and therefore, are at greater risk for development of varied functional and chronic pain disorders such as IBS and fibromyalgia. | |||
Age | |||
IBS is usually diagnosed in patients at an age lesser than 45 years. | |||
Children | |||
In children, a greater prevalence of IBS has been found in girls worldwide. | |||
In Asia, the ratio of girls affected as compared to boys is higher. | |||
The prevalence of IBS in the pediatric population of different geographical settings is similar. | |||
===Incidence=== | ===Incidence=== | ||
*The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide. | *The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide. | ||
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===Developing Countries=== | ===Developing Countries=== | ||
==References== | ==References== | ||
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:
Overview
Numerous studies have reported that the prevalence of IBS varies by country and by age range examined.
Epidemiology and Demographics
Incidence
- The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide.
- In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.
Prevalence
- Prevalence of IBS depends on the diagnostic criteria and varies with geographical and demographic distribution. [1]
- Data from USA and Europe suggests that the prevalence of IBS is 10.000 - 20,000 per 100,000 individuals. [1]
- The worldwide prevalence for IBS based on the criteria such as Manning, Rome I, Rome II or Rome II is 11,200 per 100,000 individuals. [1]
The incidence/prevalence of [disease name] is approximately [number range] worldwide.
- In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.
- The prevalence of [disease/malignancy] is estimated to be [number] cases annually.
Case-fatality rate/Mortality rate
- In [year], the incidence of [disease name] is approximately [number range] per 100,000 individuals with a case-fatality rate/mortality rate of [number range]%.
- The case-fatality rate/mortality rate of [disease name] is approximately [number range].
Age
People younger than 35 are at greater risk
Gender
Females are at higher risk than males
Developed Countries
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%[2] | Boivin, 2001 | |
| Japan | 10%[3] | Quigley, 2006 | Study measured prevalence of GI abdominal pain/cramping |
| United Kingdom | 8.2%[4]
10.5%[5] |
Ehlin, 2003
Wilson, 2004 |
Prevalence increased substantially 1970-2004 |
| United States | 14.1%[6] | Hungin, 2005 | Most undiagnosed |
| United States | 15%[2] | Boivin,2001 | Estimate |
Returning Travelers: A study of United States residents returning from international travel found a high rate of IBS and persistent diarrhea which 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.[7]
Developing Countries
| Percentage of Population Reporting Symptoms of IBS in Various Studies from Various Geographic Areas | |||
|---|---|---|---|
| Country | Prevalence | Author/Year | Notes |
| Brazil | 43%[3] | Quigley, 2006 | Study measured prevalence of GI abdominal pain/cramping |
| Mexico City | 35%[8] | Schmulson, 2006 | n=324. Also measured functional diarrhea and functional vomiting. High rates attributed to "stress of living in a populated city." |
| Mexico | 46%[3] | Quigley, 2006 | Study measured prevalence of GI abdominal pain/cramping |
| Pakistan | 14%[9] | Jafri, 2007 | Much more common in 16-30 age range. Of IBS patients, 56% male, 44% female |
| Pakistan | 34%[10] | Jafri,2005 | College students |
Epidemiology and Demographics
IBS is an extremely common disorder in the population.
In USA and Australia, 1 in every 10 people fulfil the Rome Ⅲ criteria for IBS, although most of them tend to go undiagnosed. IBS is underdiagnosed in Asian countries where risk factors for infection and dietary patterns are undergoing change.
In the Western pediatric population, IBS is the commonest cause of functional RAP as it accounts for more than 50% of all cases.
Gender- There is a female predominance of IBS in the west, as compared to the east. This is mostly due to a combination of social and biological factors. The likelihood of diagnosis is 2-3 times more in women as compared to men. Health care seeking behavior for symptoms is 4-5 times higher in women as compared to men. It has been postulated that hormonal factors are an important risk factor for IBS, with the fluctuation of sex hormones causing exacerbation of symptoms. Women are more commonly victims of sexual abuse as compared to men. Sexual abuse is a major risk factor of IBS and 33 in every 100 patients have been found to report history of abuse. Women have a lower threshold for pain and therefore, are at greater risk for development of varied functional and chronic pain disorders such as IBS and fibromyalgia.
Age
IBS is usually diagnosed in patients at an age lesser than 45 years.
Children In children, a greater prevalence of IBS has been found in girls worldwide. In Asia, the ratio of girls affected as compared to boys is higher. The prevalence of IBS in the pediatric population of different geographical settings is similar.
Incidence
- The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide.
- In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.
Prevalence
- The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide.
- In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.
- The prevalence of [disease/malignancy] is estimated to be [number] cases annually.
Case-fatality rate/Mortality rate
- In [year], the incidence of [disease name] is approximately [number range] per 100,000 individuals with a case-fatality rate/mortality rate of [number range]%.
- The case-fatality rate/mortality rate of [disease name] is approximately [number range].
Age
- Patients of all age groups may develop [disease name].
- The incidence of [disease name] increases with age; the median age at diagnosis is [#] years.
- [Disease name] commonly affects individuals younger than/older than [number of years] years of age.
- [Chronic disease name] is usually first diagnosed among [age group].
- [Acute disease name] commonly affects [age group].
Race
- There is no racial predilection to [disease name].
- [Disease name] usually affects individuals of the [race 1] race. [Race 2] individuals are less likely to develop [disease name].
Gender
- [Disease name] affects men and women equally.
- [Gender 1] are more commonly affected by [disease name] than [gender 2]. The [gender 1] to [gender 2] ratio is approximately [number > 1] to 1.
Region
- The majority of [disease name] cases are reported in [geographical region].
- [Disease name] is a common/rare disease that tends to affect [patient population 1] and [patient population 2].
Developed Countries
Developing Countries
References
- ↑ 1.0 1.1 1.2 Gwee KA, Ghoshal UC, Chen M (2017). "Irritable bowel syndrome in Asia: pathogenesis, natural history, epidemiology and management". J. Gastroenterol. Hepatol. doi:10.1111/jgh.13987. PMID 28901578.
- ↑ 2.0 2.1 Boivin M. (2001 Oct;15). "Socioeconomic impact of irritable bowel syndrome in". Canada. Can J Gastroenterol. Suppl B: :8B-11B. PMID 11694908. Check date values in:
|year=(help) - ↑ 3.0 3.1 3.2 Quigley EM, Locke GR, Mueller-Lissner S, Paulo LG, Tytgat GN, Helfrich I, Schaefer E. Prevalence and management of abdominal cramping and pain: a multinational survey. (2006 Jul). "Aliment Pharmacol Ther". 24 (2): 411–9. PMID 16842469. Check date values in:
|year=(help) - ↑ Ehlin AG, Montgomery SM, Ekbom A, Pounder RE, Wakefield AJ. (2003 Aug). "Prevalence of gastrointestinal diseases in two British national birth cohorts". Gut. 52 (8): 1117-21. PMID 12865268. Check date values in:
|year=(help) - ↑ Wilson S, Roberts L, Roalfe A, Bridge P, Singh S. (2004). "Prevalence of irritable bowel syndrome: a community survey". Br J Gen Pract. 54 (504): 495-502. PMID 15239910.
- ↑ Hungin AP, Chang L, Locke GR, Dennis EH, Barghout V (2005). "Irritable bowel syndrome in the United States: prevalence, symptom patterns and impact". Aliment. Pharmacol. Ther. 21 (11): 1365–75. doi:10.1111/j.1365-2036.2005.02463.x. PMID 15932367.
- ↑ Tuteja AK, Talley NJ, Gelman SS, Adler SC, Thompson C, Tolman K, Hale DC.
E. (2007). "Development of Functional Diarrhea, Constipation, Irritable Bowel Syndrome, and Dyspepsia During and After Traveling Outside the USA". Dig. Dis. Sci. PMID 17549631. line feed character in
|author=at position 74 (help) - ↑ Schmulson M, Ortiz O, Santiago-Lomeli M, Gutierrez-Reyes G, Gutierrez-Ruiz MC, Robles-Diaz G, Morgan D. (2006). "Frequency of functional bowel disorders among healthy volunteers in Mexico City" (PDF). Dig Dis. 24: :342-7. PMID 16849861. Unknown parameter
|oissue=ignored (help) - ↑ Jafri W, Yakoob J, Jafri N Islam M, Ali QM. (2007 Jun). "Irritable bowel syndrome and health seeking behaviour in different communities of Pakistan". J Pak Med Assoc. 57 (6): 285–7. PMID 17629228. Check date values in:
|year=(help) - ↑ Jafri W, Yakoob J, Jafri N, Islam M, Ali QM. (2005 Oct-Dec). "Frequency of irritable bowel syndrome in college students". J Ayub Med Coll Abbottabad. 4 (17): 9–11. PMID 16599025. Check date values in:
|year=(help)