Knowledge on preconceptional folic acid supplementation and intention to seek for preconception care among men and women in an urban city: a population-based cross-sectional study

Table 1 Study size and response rate per study year in the Omnibus Survey

Study year^e	PCC FA knowledge^a		PCC intention to consult a GP/midwife^b
Study year^e	Response size^d, n	Response rate, %	Response size^d, n	Response rate, %
2007	1314	38	1329	42
2009	1240	35	1250	40
2010	1212	35	1225	38
2011	NA^c	NA^c	1194	38
2012	NA^c	NA^c	1105	37
2013	NA^c	NA^c	1080	35
2014	NA^c	NA^c	897	29

^aPreconceptional folic acid knowledge based on: “A woman who wishes to become pregnant should take folic acid supplementation before she tries to become pregnant”. Rotterdam, the Netherlands, 2007, 2009 and 2010
^bPreconceptional intention to consult a GP or midwife based on: “A woman who wishes to become pregnant should consult a GP or midwife before she tries to become pregnant”. Rotterdam, the Netherlands, 2007, 2009–2014
^cNA Not accounted
^dResponse size represents the number of returned and filled out surveys
^eEach study year the study sample covered 3500 participants aged 16–85 drawn from the municipal register

ISSN: 1471-2393