Fig. 1From: Higher circulating Trimethylamine N-oxide levels are associated with worse severity and prognosis in pulmonary hypertension: a cohort studyRestricted cubic spline of TMAO levels in relation to hazard ratio for the risk of clinical endpoint (n = 163). Dark red line with 95% confidence interval shaded in light red. HR hazard ratio; CI confidence interval; TMAO trimethylamine-N-oxideBack to article page