Prevalence and determinants of preconception folic acid use: an Italian multicenter survey

Table 4 Prevalence and association of preconception folic acid supplement use according to status of preconception health visit to a doctor/gynecologist and status of pregnancy intention

Preconception health visit	Pregnancy intention^a	No. of women^b	No. of supplement users^c		Crude^d		Adjusted^e
Preconception health visit	Pregnancy intention^a	No. of women^b	No. of supplement users^c		Prevalence ratio	95 % confidence interval	Prevalence ratio	95 % confidence interval
		n	n	%
No^f	No^f	584	28	4.8	1.00		1.00
No	Yes	659	97	14.7	2.98	1.93, 4.61	2.87	1.72, 4.79
Yes	No	188	39	20.7	4.35	2.33, 8.12	4.08	2.29, 7.28
Yes	Yes	712	346	48.6	9.69	5.68, 16.5	7.90	4.62, 13.5

^aStatus of pregnancy intention was defined as intended (yes) and unintended/mistimed (no)
^bData were missing for 30 women on pregnancy intention and 16 women on preconception health visit
^cAny supplement use that started before the last menstrual period
^dCrude prevalence ratio was estimated by log-binomial regression models
^eAdjusted for maternal age, parity, maternal education, marital status, Italian citizenship, infertility treatment, and maternal smoking before pregnancy
^fReference category

ISSN: 1824-7288