Table 2.

Mediation Effects of Hypothesized Models of Child Maltreatment (CTQ-SF) on Depressive Symptoms (CES-D) Through Sleep

	Model 1 (adjusted for sex and race and ethnicity)					Model 2 (further adjusted for depressive symptoms)
Path	B	SE	β	95% CI LL	95% CI UL	B	SE	β	95% CI LL	95% CI UL
Pittsburgh Sleep Quality Index
a	0.04	0.01	0.17	0.10	0.24	0.03	0.01	0.12	0.04	0.19
b	1.71	0.14	0.37	0.31	0.43	1.29	0.14	0.28	0.22	0.34
a × b (indirect effect)	0.07	0.02	0.06	0.04	0.09	0.04	0.01	0.03	0.01	0.06
c (total effect)	0.31	0.05	0.28	0.21	0.37	0.19	0.05	0.18	0.10	0.26
c’ (direct effect)	0.24	0.05	0.22	0.14	0.31	0.16	0.05	0.15	0.07	0.23
Sleep Regularity Index
a	−0.12	0.03	−0.14	−0.21	−0.07	−0.10	0.03	−0.12	−0.19	−0.05
b	−0.14	0.04	−0.11	−0.19	−0.04	−0.09	0.04	−0.07	−0.13	−0.01
a × b (indirect effect)	0.02	0.01	0.02	0.005	0.03	0.01	0.01	0.01	0.00	0.02
c (total effect)	0.31	0.05	0.28	0.21	0.37	0.19	0.04	0.18	0.10	0.26
c’ (direct effect)	0.29	0.05	0.27	0.19	0.35	0.18	0.04	0.17	0.10	0.25
24-hour average sleep duration
a	−0.001	0.002	−0.01	−0.08	0.06	0.001	0.002	0.01	−0.06	0.08
b	−0.99	0.54	−0.06	−0.13	0.004	−0.46	0.48	−0.03	−0.09	0.03
a × b (indirect effect)	0.001	0.003	0.001	−0.004	0.01	−0.0003	0.002	−0.0003	−0.004	0.003
c (total effect)	0.31	0.05	0.29	0.21	0.37	0.19	0.04	0.18	0.11	0.26
c’ (direct effect)	0.31	0.05	0.29	0.21	0.37	0.20	0.04	0.18	0.11	0.27

SE, standard error; CI, confidence interval; LL, lower limit; UL, upper limit. Significant effects are in italics. 95% CIs are percentile-based. B and SE are unstandardized, β and 95% CIs are standardized. The Sleep Regularity Index and 24-hour average sleep duration are computed from the daily sleep diary data.