Global smoking trends in inflammatory bowel disease: A systematic review of inception cohorts

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Global smoking trends in inflammatory bowel disease : A systematic review of inception cohorts. / Thomas, Tom; Chandan, Joht Singh; Li, Venice Sze Wai; Lai, Cheuk Yin; Tang, Whitney; Bhala, Neeraj; Kaplan, Gilaad G; Ng, Siew C; Ghosh, Subrata.

In: PLoS ONE, Vol. 14, No. 9, e0221961, 23.09.2019.

Research output: Contribution to journalArticle

Harvard

Thomas, T, Chandan, JS, Li, VSW, Lai, CY, Tang, W, Bhala, N, Kaplan, GG, Ng, SC & Ghosh, S 2019, 'Global smoking trends in inflammatory bowel disease: A systematic review of inception cohorts', PLoS ONE, vol. 14, no. 9, e0221961. https://doi.org/10.1371/journal.pone.0221961

APA

Thomas, T., Chandan, J. S., Li, V. S. W., Lai, C. Y., Tang, W., Bhala, N., Kaplan, G. G., Ng, S. C., & Ghosh, S. (2019). Global smoking trends in inflammatory bowel disease: A systematic review of inception cohorts. PLoS ONE, 14(9), [e0221961]. https://doi.org/10.1371/journal.pone.0221961

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Thomas, Tom ; Chandan, Joht Singh ; Li, Venice Sze Wai ; Lai, Cheuk Yin ; Tang, Whitney ; Bhala, Neeraj ; Kaplan, Gilaad G ; Ng, Siew C ; Ghosh, Subrata. / Global smoking trends in inflammatory bowel disease : A systematic review of inception cohorts. In: PLoS ONE. 2019 ; Vol. 14, No. 9.

Bibtex

@article{6d7da074894147868704e8ff0dd2f8b6,
title = "Global smoking trends in inflammatory bowel disease: A systematic review of inception cohorts",
abstract = "BACKGROUND AND AIMS: The effect of smoking on the risk of developing inflammatory bowel diseases (IBD) may be heterogeneous across ethnicity and geography. Although trends in smoking for the general population are well described, it is unknown whether these can be extrapolated to the IBD cohort. Smoking prevalence trends specific to the global IBD cohort over time have not been previously reported. This is a systematic review of smoking prevalence specific to the IBD cohort across geography.METHODS: A systematic literature search was conducted on Medline and Embase from January 1st 1946 to April 5th 2018 to identify population-based studies assessing the prevalence of smoking at diagnosis in inception cohorts of Crohn's disease(CD) or ulcerative colitis(UC). Studies that did not report smoking data from time of diagnosis or the year of IBD diagnosis were excluded. Prevalence of smoking in IBD was stratified by geography and across time.RESULTS: We identified 56 studies that were eligible for inclusion. Smoking prevalence data at diagnosis of CD and UC was collected from twenty and twenty-five countries respectively. Never-smokers in the newly diagnosed CD population in the West has increased over the last two decades, especially in the United Kingdom and Sweden; +26.6% and +11.2% respectively. Never-smokers at CD diagnosis in newly industrialised nations have decreased over the 1990s and 2000s; China (-19.36%). Never-smokers at UC diagnosis also decreased in China; -15.4%. The former-smoker population at UC diagnosis in China is expanding; 11%(1990-2006) to 34%(2011-2013).CONCLUSION: There has been a reduction in the prevalence of smoking in the IBD cohort in the West. This is not consistent globally. Although, smoking prevalence has decreased in the general population of newly industrialised nations, this remains an important risk factor with longer term outcomes awaiting translation in both UC and CD.",
author = "Tom Thomas and Chandan, {Joht Singh} and Li, {Venice Sze Wai} and Lai, {Cheuk Yin} and Whitney Tang and Neeraj Bhala and Kaplan, {Gilaad G} and Ng, {Siew C} and Subrata Ghosh",
year = "2019",
month = sep,
day = "23",
doi = "10.1371/journal.pone.0221961",
language = "English",
volume = "14",
journal = "PLoSONE",
issn = "1932-6203",
publisher = "Public Library of Science (PLOS)",
number = "9",

}

RIS

TY - JOUR

T1 - Global smoking trends in inflammatory bowel disease

T2 - A systematic review of inception cohorts

AU - Thomas, Tom

AU - Chandan, Joht Singh

AU - Li, Venice Sze Wai

AU - Lai, Cheuk Yin

AU - Tang, Whitney

AU - Bhala, Neeraj

AU - Kaplan, Gilaad G

AU - Ng, Siew C

AU - Ghosh, Subrata

PY - 2019/9/23

Y1 - 2019/9/23

N2 - BACKGROUND AND AIMS: The effect of smoking on the risk of developing inflammatory bowel diseases (IBD) may be heterogeneous across ethnicity and geography. Although trends in smoking for the general population are well described, it is unknown whether these can be extrapolated to the IBD cohort. Smoking prevalence trends specific to the global IBD cohort over time have not been previously reported. This is a systematic review of smoking prevalence specific to the IBD cohort across geography.METHODS: A systematic literature search was conducted on Medline and Embase from January 1st 1946 to April 5th 2018 to identify population-based studies assessing the prevalence of smoking at diagnosis in inception cohorts of Crohn's disease(CD) or ulcerative colitis(UC). Studies that did not report smoking data from time of diagnosis or the year of IBD diagnosis were excluded. Prevalence of smoking in IBD was stratified by geography and across time.RESULTS: We identified 56 studies that were eligible for inclusion. Smoking prevalence data at diagnosis of CD and UC was collected from twenty and twenty-five countries respectively. Never-smokers in the newly diagnosed CD population in the West has increased over the last two decades, especially in the United Kingdom and Sweden; +26.6% and +11.2% respectively. Never-smokers at CD diagnosis in newly industrialised nations have decreased over the 1990s and 2000s; China (-19.36%). Never-smokers at UC diagnosis also decreased in China; -15.4%. The former-smoker population at UC diagnosis in China is expanding; 11%(1990-2006) to 34%(2011-2013).CONCLUSION: There has been a reduction in the prevalence of smoking in the IBD cohort in the West. This is not consistent globally. Although, smoking prevalence has decreased in the general population of newly industrialised nations, this remains an important risk factor with longer term outcomes awaiting translation in both UC and CD.

AB - BACKGROUND AND AIMS: The effect of smoking on the risk of developing inflammatory bowel diseases (IBD) may be heterogeneous across ethnicity and geography. Although trends in smoking for the general population are well described, it is unknown whether these can be extrapolated to the IBD cohort. Smoking prevalence trends specific to the global IBD cohort over time have not been previously reported. This is a systematic review of smoking prevalence specific to the IBD cohort across geography.METHODS: A systematic literature search was conducted on Medline and Embase from January 1st 1946 to April 5th 2018 to identify population-based studies assessing the prevalence of smoking at diagnosis in inception cohorts of Crohn's disease(CD) or ulcerative colitis(UC). Studies that did not report smoking data from time of diagnosis or the year of IBD diagnosis were excluded. Prevalence of smoking in IBD was stratified by geography and across time.RESULTS: We identified 56 studies that were eligible for inclusion. Smoking prevalence data at diagnosis of CD and UC was collected from twenty and twenty-five countries respectively. Never-smokers in the newly diagnosed CD population in the West has increased over the last two decades, especially in the United Kingdom and Sweden; +26.6% and +11.2% respectively. Never-smokers at CD diagnosis in newly industrialised nations have decreased over the 1990s and 2000s; China (-19.36%). Never-smokers at UC diagnosis also decreased in China; -15.4%. The former-smoker population at UC diagnosis in China is expanding; 11%(1990-2006) to 34%(2011-2013).CONCLUSION: There has been a reduction in the prevalence of smoking in the IBD cohort in the West. This is not consistent globally. Although, smoking prevalence has decreased in the general population of newly industrialised nations, this remains an important risk factor with longer term outcomes awaiting translation in both UC and CD.

UR - http://www.scopus.com/inward/record.url?scp=85072556388&partnerID=8YFLogxK

U2 - 10.1371/journal.pone.0221961

DO - 10.1371/journal.pone.0221961

M3 - Article

C2 - 31545811

VL - 14

JO - PLoSONE

JF - PLoSONE

SN - 1932-6203

IS - 9

M1 - e0221961

ER -