Table 4.

Parameter estimates during the recovery phase of the 6‐min walk test (6MWT)

Group	Parameter estimates
	Parameter	Estimate	Standard error	DF	P value
PAH	PAH4	4.5	0.62	48	<0.0001
	PAH5	0.95	0.76	48	0.21
	PAH6	−0.17	0.003	48	<0.0001
OLD	OLD4	2.91	0.67	48	<0.0001
	OLD5	−0.38	0.84	48	0.66
	OLD6	−0.15	0.003	48	<0.0001
Control	C4	9.26	0.82	48	<0.0001
	C5	−0.22	0.97	48	0.82
	C6	−0.12	0.002	48	<0.0001
Random effect	RE4	7.42	1.04	48	<0.0001
	RE5	−2.08	0.21	48	<0.0001
	RE6	8.89	1.12	48	<0.0001

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