TABLE 3.

Summary of Sleep and Diabetes Outcomes at Each Time Point by Intervention Group

Variable	Baseline (M ± SD)	3 months (M ± SD)	Effect size (d)
Mean TST
SC	6.85 ± 0.82	7.02 ± 0.78*	.76
UC	6.69 ± 1.00	6.37 ± 0.92
Mean efficiency
SC	84.09 ± 3.75	83.01 ± 4.04*	.38
UC	81.24 ± 6.52	80.27 ± 9.30
PSQI
SC	4.32 ± 1.67	3.86 ± 1.46	−.63
UC	4.47 ± 1.46	4.81 ± 1.56
ESS
SC	7.45 ± 4.86	6.06 ± 4.67	−.35
UC	7.22 ± 3.15	7.61 ± 4.12
HbA1c
SC	9.38 ± 2.17	9.29 ± 2.31	.07
UC	9.06 ± 1.45	9.15 ± 1.38
SCI (teen)
SC	27.60 ± 5.31	26.94 ± 3.21	−.02
UC	26.11 ± 5.48	27.00 ± 4.12
SCI (parent)
SC	26.25 ± 4.59	26.81 ± 5.88	.14
UC	26.28 ± 4.82	26.06 ± 5.08
PSQI >5	n (%)	n (%)
SC	2 (10)	1 (6)
UC	3 (17)	7 (39)

Abbreviations: d, Cohen’s d; ESS, Epworth Sleepiness Scale; PSQI, Pittsburgh Sleep Quality Index; SC, sleep coach intervention; TST, total sleep time; SCI, Self-Care Inventory; UC, usual care.

^*P < .05.