A systematic review of interventions to increase awareness, knowledge, and folic acid consumption before and during pregnancy.

Objective: We conducted a systematic review of studies designed to increase awareness of knowledge about, and consumption of folic acid before and during pregnancy.

Data Sources: Studies were identified from Cochrane Library, Medline, and the references of primary studies and reviews.

Study Inclusion And Exclusion Criteria: Studies included randomized controlled trials, quasi-experimental interrupted time series studies, follow-up studies, case-control studies, and before-and-after studies, all of which were conducted between 1992 and 2005 on women ages 15 to 49 years and/or health professionals, evaluating awareness and/or knowledge and/or consumption of folic acid both before and after intervention.