Asthma is not associated with the need for surgery in Crohn’s disease when controlling for smoking status: a population-based cohort study

M Ellen Kuenzig1 Children’s Hospital of Eastern Ontario (CHEO) Inflammatory Bowel Disease Centre, Division of Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada, [email protected];2 Health Information Technology Program, CHEO Research Institute, Ottawa, ON, Canada, [email protected];3 Institute for Clinical Evaluative Sciences, Ottawa, ON, Canada, [email protected]Correspondence[email protected]

Mohsen Sadatsafavi4 Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada

J Antonio Aviña-Zubieta5 Arthritis Research Canada, Division of Rheumatology, University of British Columbia, Vancouver, BC, Canada

Rebecca M Burne6 Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada

Michal Abrahamowicz6 Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada;7 Centre for Health Outcomes Research (CORE), Research Institute of the McGill University Health Centre, Montreal, QC, Canada

Marie-Eve Beauchamp7 Centre for Health Outcomes Research (CORE), Research Institute of the McGill University Health Centre, Montreal, QC, Canada

Gilaad G Kaplan8 Department of Medicine, University of Calgary, Calgary, AB, Canada;9 Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada;10 O’Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada;11 Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada

Eric I Benchimol1 Children’s Hospital of Eastern Ontario (CHEO) Inflammatory Bowel Disease Centre, Division of Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Eastern Ontario, Ottawa, ON, Canada, [email protected];2 Health Information Technology Program, CHEO Research Institute, Ottawa, ON, Canada, [email protected];3 Institute for Clinical Evaluative Sciences, Ottawa, ON, Canada, [email protected];12 Department of Pediatrics, University of Ottawa; Ottawa, ON, Canada;13 School of Epidemiology and Public Health, University of Ottawa, Ottawa, ON, Canada

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Asthma is not associated with the need for surgery in Crohn’s disease when controlling for smoking status: a population-based cohort study

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Asthma is not associated with the need for surgery in Crohn’s disease when controlling for smoking status: a population-based cohort study

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