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- Title
The impact of smoking on disease measures in rheumatoid arthritis: the need for appropriate adjustment of time-varying confounding.
- Authors
Gianfrancesco, Milena A.; Yazdany, Jinoos; Schmajuk, Gabriela
- Abstract
In a recent publication, Quintana-Dunque et al. studied patients with early onset rheumatoid arthritis (RA) and showed that baseline smoking status was inversely associated with disease activity and disability at 36 months. The authors conclude that smoking may not be as deleterious as previously considered in RA disease course. However, the authors fail to highlight several limitations of study design and analysis, including time-varying confounding, which may have a direct impact on results and corresponding conclusions.
- Subjects
SMOKING; RHEUMATOID arthritis; RHEUMATISM; BLOOD hyperviscosity syndrome; AUTOIMMUNE diseases
- Publication
Rheumatology International, 2018, Vol 38, Issue 2, p313
- ISSN
0172-8172
- Publication type
Letter
- DOI
10.1007/s00296-017-3902-3