Table 1:

Baseline Demographics for All Patients according to PH Status and Derivation or Validation Cohort

Note.—Except where indicated, data are means ± standard deviations. P values were calculated by using the Student t test for continuous variables and the χ² test for discrete variables. FEV1 = forced expiratory volume in 1 second, FVC = forced vital capacity, ISWT = incremental shuttle walk test, mPAP = right-sided heart catheterization–measured mean pulmonary arterial pressure, mRAP = mean right atrial pressure, PAWP = pulmonary artery wedge pressure, PH = pulmonary hypertension, PVRI = pulmonary vascular resistance index, RHC = right-sided heart catheterization, SvO₂ = mixed venous oxygen saturation, TLCO = transfer factor for carbon monoxide, WHO = World Health Organization.

*There were 52 patients without PH and 218 with PH.

^†There were 45 patients without PH and 258 with PH.

^‡Data are numbers of patients.