Table 3.

Multivariable linear regression analysis to explore the association between food security and perinatal depression (N 755)

					Model I			Model II
Characteristics		β	95 % CI	P	β	95 % CI	P	β	95 % CI	P
HFIAS score		0·26	0·176, 0·345	<0·001	0·27	0·173, 0·359	<0·001	0·10	0·008, 0·189	0·033
Binary of food insecurity		0·58	0·422, 0·743	<0·001	0·55	0·379, 0·723	<0·001	0·29	0·131, 0·457	<0·001
Category of food insecurity	Food-secure	Ref		<0·001	Ref			Ref
	Mildly food-insecure	0·65	0·375, 0·931	<0·001	0·51	0·225, 0·791	<0·001	0·54	0·284, 0·800	<0·001
	Moderately food-insecure	0·58	0·411, 0·759	<0·001	0·58	0·398, 0·771	<0·001	0·22	0·038, 0·400	0·018
	Severely food-insecure	0·38	–0·050, 0·801	0·084	0·33	–0·100, 0·766	0·131	0·11	–0·277, 0·503	0·568
PHQ-9 at T1		0·46	0·384, 0·543	<0·001				0·37	0·278, 0·469	<0·001
Perceived stress		0·04	0·028, 0·056	<0·001				0·001	–0·018, 0·021	0·891
State–trait anxiety		0·06	0·047, 0·080	<0·001				0·04	0·015 0·062	0·001
IPV		0·10	0·044, 0·152	<0·001				−0·002	–0·054, 0·048	0·915

HFIAS, household food insecurity access scale; PHQ, Patient Health Questionnaire; IPV, intimate partner violence.