Table 4.

Linear regressions demonstrating the unique contribution of perceived stress to the variability in patient-reported outcomes.

	β (p)	ΔR2 (p)
Physical HRQoL
Model 1
Age	−0.11 (0.117)
NYHA Class	−0.42 (<0.001)
Sex	−0.06 (0.386)
Model 2
Age	−0.04 (0.580)
NYHA Class	−0.33 (<0.001)
Sex	−0.07 (0.304)
Perceived Stress	−0.33 (<0.001)
		0.09 (<0.001)
Emotional HRQoL
Model 1
Age	−0.14 (0.064)
NYHA Class	−0.24 (0.002)
Sex	−0.05 (0.476)
Model 2
Age	−0.02 (0.817)
NYHA Class	−0.08 (0.253)
Sex	−0.07 (0.295)
Perceived Stress	−0.57 (<0.001)
		0.28 (<0.001)
Emotional Distress
Model 1
Age	0.05 (0.543)
NYHA Class	0.10 (0.198)
Sex	0.04 (0.630)
Model 2
Age	−0.07 (0.287)
NYHA Class	−0.05 (0.484)
Sex	0.05 (0.498)
Perceived Stress	0.56 (<0.001)	0.27 (<0.001)

HRQoL = health-related quality of life; NYHA = New York Heart Association