Table 4.

Analyses of multivariate associations between severe physical violence perpetrated by at least one member of the couple and food and nutrition insecurity in the study population. Salvador, Bahia, Brazil, 2009 (n 1019)

	Food and nutrition insecurity
	Univariate model		Multivariate model*
	PR	95 % CI	PR	95 % CI
Severe physical violence: couple
No	1·00	Ref.	1·00	Ref.
Yes	1·22	1·04, 1·43	1·16	1·00, 1·34
Potential confounding variables
Per capita monthly income, shown as tertiles
<R$140·00 (1st tertile)	4·06	2·04, 5·68
R$140·00–243·57 (2nd tertile)	1·71	1·26, 2·30
≥R$243·57 (3rd tertile)	1·00	Ref.
Economic status
Better economic conditions	1·00	Ref.
Worst economic conditions	1·37	1·25, 1·49
Education level of the head of the family
≤4th grade	1·58	1·16, 2·16
5th to 8th grade	1·46	1·07, 1·98
College or university level	1·00	Ref.
Agglomeration (number of individuals per room)
<2·0	1·00	Ref.
≥2·0	1·22	1·11, 1·34

PR, prevalence ratio; R$, Brazilian reais; Ref., reference category.

^*Multivariate model adjusted for the economic status, income, agglomeration and education level.