Fig. 2From: Circulating choline levels are associated with prognoses in patients with pulmonary hypertension: a cohort studyKaplan–Meier analysis for the incidence of composite outcome events in all PH patients with high and low choline levels. Two hundred and seventy-two patients were analysed (n = 136 both in the high and low choline group). P-value calculated using the log-rank test. PH: pulmonary hypertensionBack to article page