Figure 3. Validation of the risk prediction model. (A) Calibration curve of the model. The patients were randomly divided into three groups, and the predicted probability was compared with the actual probability to validate the model. The red solid line represents the performance of the model, and the grey line represents a perfect model. (B) Nomogram of the model. Point for each variable can be calculated, and the total points can match the cumulative incidence of cardiovascular and cerebrovascular event (CCE) in 5 and 10 years. HCQ, hydroxychloroquine; SLE, systemic lupus erythematosus. GC, glucocorticoids.