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. Author manuscript; available in PMC: 2017 Jun 16.
Published in final edited form as: Osteoarthritis Cartilage. 2014 Nov 29;23(3):331–333. doi: 10.1016/j.joca.2014.11.022

Fig. 2.

Fig. 2

Causal diagram depicting evaluation of the effect of smoking on risk of ROA. Adjusting for BMI made previously independent variables of smoking and other risk factors correlated as depicted by the dashed line.