(1) With aggregating ranks, the top 11 variables were selected according to their importance of describing pregnancy-associated HTN; (2) The graph-based SSL using the selected 11 important variables achieved the best average prediction performance, with higher sensitivity and similar specificity compared to risk factors from clinical guidelines; (3) In addition, the proposed model with graph-based SSL had higher AUROC than that of PlGF. Here, PGF is linked to hypertensive disorder.