. 2009 May 1;32(5):599–606. doi: 10.1093/sleep/32.5.599

Table 4.

Sleep-Wake Patterns for Infants (Daily Sleep Diary)

Variable	Baseline	Week 2	Week 3	ANOVA
Variable	M (SD)	M (SD)	M (SD)	F	P
Sleep latency (min)
Control	19.8 (12.45)	17.9 (12.86)	16.7 (12.81)	1.08	0.34
Intervention^a	19.9 (11.69)	14.0 (10.35)	13.4 (10.46)	14.68***	< 0.001
Time started routine
Control	8:08 (1.25)	8:11 (1.06)	8:08 (1.18)	0.03	0.97
Intervention	8:05 (.80)	8:03 (0.23)	8:04 (0.22)	0.10	0.90
Time of lights out (hours)
Control	8:50 (1.15)	8:49 (1.13)	8:49 (1.12)	0.02	0.98
Intervention	8:46 (0.80)	8:40 (0.77)	8:40 (0.80)	0.81	0.45
Longest continuous sleep period (hours)
Control	7.3 (2.17)	7.6 (2.30)	7.6 (2.23)	0.42	0.66
Intervention^a	6.9 (1.68)	8.1 (1.85)	8.5 (1.91)	26.55***	< 0.001
Number of night wakings
Control	1.2 (0.95)	1.1 (0.89)	1.1 (0.90)	0.26	0.77
Intervention^a	1.4 (0.75)	1.0 (0.77)	0.9 (0.70)	19.50***	< 0.001
Duration of night wakings (min)
Control	20.9 (18.37)	17.5 (16.90)	18.6 (20.25)	0.62	0.54
Intervention^a	25.4 (16.60)	16.3 (14.26)	13.3 (14.42)	24.73***	< 0.001
How easy was bedtime?^{^}
Control	2.1 (0.71)	2.0 (0.70)	1.9 (0.73)	1.90	0.15
Intervention^a	2.4 (0.64)	1.8 (0.55)	1.7 (0.57)	63.24***	< 0.001
Wake time
Control	7:32 (1.06)	7:29 (1.08)	7:24 (1.03)	0.23	0.80
Intervention	7:31 (0.86)	7:32 (0.90)	7:33 (0.90)	0.01	0.99
How well baby slept^{^}
Control	2.3 (0.81)	2.1 (0.79)	2.2 (0.85)	1.13	0.32
Intervention^a	2.7 (0.71)	2.1 (0.72)	1.9 (0.76)	51.36***	< 0.001
Baby's mood in the morning^{^}
Control	2.0 (0.75)	1.9 (0.71)	1.8 (0.70)	0.53	0.59
Intervention^a	2.3 (0.72)	1.9 (0.70)	1.8 (0.74)	21.10***	< 0.001
Total naps (hours)
Control	2.5 (1.11)	2.4 (1.01)	2.3 (.95)	0.41	0.66
Intervention	2.2 (0.89)	2.2 (0.89)	2.3 (.97)	0.14	0.87

^aSignificant difference between baseline/week 2 and baseline/week 3

^bStart of routine, Lights out, Wake Time expressed by 24-Hour clock, SD expressed in hours

^{^}Lower scores are better

min: minutes; SD: standard deviation