Table 6.

Actigraphic Sleep Duration across Nine Nights by Self-Report Habitual Sleep and Daily Diary According to Participant Sleep Characteristics, p<.10 for Interaction Terms

Other Sleep Measure/Participant Characteristic	N	Actigraphic Mean (SD)	Other Sleep Mean (SD)	Correlation (P-value)	Interaction Term (P-value)
Self-report habitual sleep
Age
Younger	115	5.84 (.78)	6.43 (1.29)	.31 (<.001)	.27 (<.001)
Older	108	5.73 (1.0)	6.50 (1.12)	.50 (<.001)
Insomnia
Yes	22	5.77 (.84)	5.75 (1.19)	−.04 (.87)	−.37 (.02)
No	201	5.79 (.90)	6.54 (1.19)	.45 (<.001)
Depressive symptoms
Highest Quartile	58	5.70 (.76)	6.28 (1.42)	.23 (.08)	−.27 (<.001)
Others	165	5.81 (.94)	6.53 (1.12)	.47 (<.001)
Self-reported health
Poor to Good	100	5.67 (.84)	6.28 (1.33)	.23 (.02)	.31 (<.001 )
Very good to Excellent	122	5.87 (.93)	6.60 (1.09)	.54 (<.001)
Diary
Age
Younger	115	5.84 (.78)	6.71 (.93)	.61 (<.001)	.16 (.07)
Older	108	5.73 (1.00)	6.56 (1.11)	.73 (<.001)
Race
Black	96	5.43 (.83)	6.45 (1.10)	.65 (<.001)	.15 (.08)
White	127	6.05 (.85)	6.77 (.94)	.70 (<.001)
Married/committed relationship
No	77	5.66 (.79)	6.59 (1.11)	.54 (<.001)	.36 (<.001)
Yes	146	5.85 (.94)	6.66 (.97)	.77 (<.001)
Insomnia
Yes	22	5.77 (.84)	6.48 (1.05)	.38 (.08)	−.32 (.02)
No	201	5.79 (.90)	6.65 (1.02)	.71 (<.001)
Depressive symptoms
Highest Quartile	58	5.70 (.76)	6.72 (1.23)	.46 (<.001)	−.50 (<.001)
Others	165	5.81 (.94)	6.61 (.94)	.79 (<.001)
Hostility
Highest quartile	57	5.66 (.82)	6.60 (1.13)	.57 (<.001)	−.26 (<.001)
Others	166	5.83 (.92)	6.65 (.98)	.73 (<.001)
Self-reported health
Poor to Good	100	5.67 (.84)	6.63 (1.09)	.59 (<.001)	.29 (<.001 )
Very good to Excellent	122	5.87 (.93)	6.64 (.96)	.77 (<.001)
Variability in diary duration (nights 1–9)
Highest quartile	56	5.64 (.84)	6.50 (1.19)	.54 (<.001)	−.32 (<.001)
Others	167	5.83 (.91)	6.68 (.96)	.74 (<.001)