Table 6.

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

Comparison	Additional estimates
	Label	Estimate	standard error	DF	Pr > |t|
PAH ‐ OLD	PAH4‐OLD4	1.59	0.92	48	0.09
	PAH5‐OLD5	1.33	1.12	48	0.24
	PAH6‐OLD6	−0.02	0.005	48	0.0009
PAH ‐ Control	PAH4‐C4	−4.76	1.03	48	<0.0001
	PAH5‐C5	1.17	1.22	48	0.34
	PAH6‐C6	−0.05	0.003	48	<0.0001
Control ‐ OLD	C4‐OLD4	6.35	1.06	48	<0.0001
	C5‐OLD5	0.16	1.28	48	0.9
	C6‐OLD6	0.03	0.004	48	<0.0001

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