. 2019 Nov 28;23(4):701–710. doi: 10.1017/S136898001900332X

Table 3.

Test of mediation effect of parental psychological factors in the associations between child food insecurity (FI) and poor child sleep quality^* in the sample of low-income Head Start children of pre-school age (n 362) and their caregivers from four rural counties in central Pennsylvania, USA, May 2017–May 2018

Parental psychological score	Association between child FI and parental psychological Z-score (path a in Fig. 1)		P value	Association between 1 sd increase in parental psychological score and poorer child sleep quality (path b in Fig. 1)		P value	Association between child FI and poorer child sleep quality, additionally controlling for parental psychological Z-score (path c′ in Fig. 1)		P value	% of effect mediated	Indirect effect/direct effect	Significance of mediation effect (Sobel test P value)
Parental psychological score	Adjusted β	95 % CI	P value	Adjusted OR	95 % CI	P value	Adjusted OR	95 % CI	P value	% of effect mediated	Indirect effect/direct effect	Significance of mediation effect (Sobel test P value)
Perceived stress	0·44	0·18, 0·70	0·001	1·15	0·86, 1·55	0·35	2·09	1·02, 4·28	0·04	4·1	0·05	0·81
Self-efficacy	−0·09	−0·38, 0·21	0·57	0·69	0·52, 0·91	0·01	2·24	1·10, 4·57	0·03	2·1	0·02	0·71
Depressive symptomology	0·33	0·06, 0·60	0·02	1·14	0·85, 1·52	0·39	2·19	1·08, 4·45	0·03	2·9	0·03	0·79

Statistically significant values are shown in bold.

All models were adjusted for participation in assistance programmes, household income level, household chaos score and family functioning score.