Table 5.

Comparison among the groups of parameter estimates during the 6‐min walk test (6MWT)

Comparison	Additional estimates
	Label	Estimate	Standard error	DF	P value
PAH ‐ OLD	PAH1‐OLD1	0.16	0.07	48	0.02
	PAH1‐OLD2	−0.11	0.1	48	0.29
	PAH3‐OLD3	0.02	0.002	48	<0.0001
PAH ‐ Control	PAH1‐C1	−0.04	0.07	48	0.57
	PAH2‐C2	0.11	0.11	48	0.32
	PAH3‐C3	0.05	0.002	48	<0.0001
Control ‐ OLD	C1‐OLD1	0.2	0.08	48	0.01
	C2‐OLD2	−0.21	0.11	48	0.06
	C3‐OLD3	−0.02	0.002	48	<0.0001

Control, healthy controls; DF, degrees of freedom; PAH, pulmonary arterial hypertension; OLD, other lung diseases.