Table 3.

Relationship between Cortisol_change and the discrepancy between subjective and objective sleep quality.

Variables	β	p	95% Confidence Interval
DV: Discrepancy in sleep quality
Cortisolchange (nmol/L)	0.290	0.010	[0.072, 0.507]
Objective sleep time (min)	−0.301	0.007	[−0.518, −0.084]
Age (years)	−0.190	0.099	[−0.416, 0.037]
SES	0.044	0.686	[−0.173, 0.262]
Physical activity	−0.048	0.657	[−0.263, 0.167]
Sex	−0.202	0.097	[−0.441, 0.037]
Perceived stress day before	0.027	0.814	[−0.204, 0.258]
Stress expected coming day	−0.028	0.814	[−0.263, 0.207]
PSS	0.144	0.219	[−0.088, 0.377]
BDI	−0.024	0.854	[−0.285, 0.237]

Note: n = 44; 76 nights. SES = Subjective socioeconomic status; PSS = Perceived Stress Scale; BDI = Beck Depression Inventory. Objective sleep time (min) was obtained from sleep duration computed from actigraphy.