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. 2023 Aug 23;25:155. doi: 10.1186/s13075-023-03139-y

Fig. 1.

Fig. 1

The flow chart of this study. SLE, systemic lupus erythematosus; PAH, pulmonary arterial hypertension; TTE, transthoracic echocardiography; RHC, right heart catheterization; K-M, Kaplan–Meier; IPAH, idiopathic PAH, LASSO, the least absolute shrinkage and selection operator; DCA, decision curve analysis