Table 3.

Repeated Measures Analysis of Parental Postpartum Sleep by Group and Sample (M ± SD)

	1 Month		3 Months
					Between-Group, F Statistic
	Control	Intervention	Control	Intervention
Mothers in Sample 1
Actigraphy	n = 56	n = 46	n = 56	n = 46
Nocturnal sleep time (hours)	6.3 ± 1.5	6.0 ± 1.2	7.1 ± 1.1	6.7 ± 1.3	ns
Nocturnal sleep efficiency (%)	68 ± 9.8	69 ± 9.7	81 ± 6.6	80 ± 8.1	ns
Nocturnal WASO (%)	29 ± 8.9	29 ± 9.4	18 ± 8.0	17 ± 8.2	ns
Daytime sleep (minutes)	69 ± 62	79 ± 55	28 ± 37	41 ± 54	ns
Self-report	n = 62	n = 56	n = 62	n = 56
Total Sleep Disturbance Score	57 ± 15	56 ± 15	38 ± 16	41 ± 17	ns
Daytime Sleepiness Score	3.4 ± 1.1	3.4 ± 1.3	2.0 ± 1.2	2.1 ± 1.2	ns
Mothers in Sample 2
Actigraphy	n = 32	n = 77	n = 32	n = 77
Nocturnal sleep time (hours)	6.1 ± 1.4	6.6 ± 1.3	6.5 ± 1.4	7.1 ± 1.4	F(1,107) = 5.6, p =.016
Nocturnal sleep efficiency (%)	68 ± 11	71 ± 10	75 ± 12	80 ± 10	F(1,107) = 5.3, p =.024
Nocturnal WASO (%)	30 ± 11	27 ± 10	23 ± 12	19 ± 10	F(1,107) = 4.9, p =.029
Daytime sleep (minutes)	92 ± 76	90 ± 64	72 ± 88	63 ± 56	ns
Self-report	n = 36	n = 86	n = 36	n = 86
Total Sleep Disturbance Score	50 ± 19	50 ± 15	36 ± 20	38 ± 16	ns
Daytime Sleepiness Score	3.0 ± 1.4	2.8 ± 1.1	2.0 ± 1.3	2.2 ± 1.2	ns
Fathers in Sample 1
Actigraphy	n = 55	n = 51	n = 55	n = 51
Nocturnal sleep time (hours)	6.5 ± 1.5	6.4 ± 1.3	6.7 ± 1.0	6.8 ± 1.2	ns
Nocturnal sleep efficiency (%)	78 ± 12	82 ± 10	83 ±9	86 ±9	ns
Nocturnal WASO (%)	18 ± 10	15 ± 10	14 ±9	12 ±9	ns
Daytime sleep (minutes)	17 ± 33	32 ± 60	12 ± 18	29 ± 61	ns
Self-report	n = 58	n = 53	n = 58	n = 53
Total Sleep Disturbance Score	43 ± 15	43 ± 16	32 ± 13	33 ± 12	ns
Daytime Sleepiness Score	2.2 ± 1.1	2.4 ± 1.2	1.6 ± .9	1.7 ± .9	ns

Note. WASO = wake after sleep onset, a measure of sleep disruption.