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Alternate calibration plot comparing predicted and observed cardiovascular (CV) disease risk for patients with rheumatoid arthritis. Poisson regression with a smoothing spline was used to estimate observed risk from the predicted risk (obtained from the Framingham risk score). The grey line is the identity line. Dashed lines are 95% confidence intervals for the fit. There were only 4 events with predicted CV risk >50%, so the fit is not displayed beyond this point.
