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Open Access Highly Accessed Research article

Cigarette smoking and smoking cessation in relation to risk of rheumatoid arthritis in women

Daniela Di Giuseppe1*, Nicola Orsini1, Lars Alfredsson2, Johan Askling3 and Alicja Wolk1

Author Affiliations

1 Division of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Nobels vag 13, Stockholm, 171 77, Sweden

2 Division of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Nobels vag 13, Stockholm, 171 77, Sweden

3 Clinical Epidemiology Unit, Department of Medicine, Rheumatology Unit d2:01, Karolinska University Hospital, Solna, 171 76, Sweden

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Arthritis Research & Therapy 2013, 15:R56  doi:10.1186/ar4218

Published: 22 April 2013

Additional files

Additional file 1:

Sensitivity analyses. A series of sensitivity analyses were performed to evaluate the consistency of the reported results. In part A, different case definitions were considered. In part B, a probabilistic sensitivity analysis was performed by excluding possible prevalent cases included in the study as incident cases.

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