TABLE 2

Between-group differences of the pressure–flow slope

LowlandersHighlandersBetween group differencesp-value
Subjects n2252
ΔTRPG/ΔCI WU3.0±2.49.4±11.46.4 (1.4 to 11.3)0.012
ΔmPAP/ΔCO WU1.0±0.83.3±3.82.3 (0.6 to 3.9)0.007

Data are presented as mean±sd or mean difference (95% CI), unless otherwise stated. TRPG: tricuspid regurgitation pressure gradient; CI: cardiac index; mPAP: mean pulmonary artery pressure; CO: cardiac output.