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Additional file 3. Consent form.

Additional file 3. Consent form.

Additional file 4. Questionnaire- Sinhalese.

Additional file 4. Questionnaire- Sinhalese.

Additional file 1. Questionnaire-English.

Additional file 2. Information sheet.

Questionnaire to assess the knowledge of the antenatal mothers on birth defects, associated factors, prevention and management. This is a self-administered questionnaire used to collect data from the antenatal mothers. In the development of the questionnaire for the present study, the questionnaire developed by Bello et al., (2013) was used as a reference [3]. Additional questions were added to address the aims of the study. The questionnaire consisted of two parts; part A and part B. Part A of the questionnaire was used to gather socio-demographic data including age, ethnicity, highest educational qualification, monthly income, parity, previous children with birth defects, and the number of clinics attended. Data was obtained on prior awareness on birth defects and the sources of such information. An added question was included to inquire on the preconceptional FA intake. If FA was taken preconceptionally, the reason for them to take preconceptional FA supplementation was inquired. Part B of the questionnaire consisted of three sections; knowledge on BD, knowledge on associated factors of BD and knowledge on prevention and management of BD. Respectively, 10, 21 and 7 statements were included in each section. In all 3 sections mothers were asked to mark their responses stating whether the given statement is true, false or do not know. (DOCX 22 kb)

Indications for caesarean section in suspected macrosomic infants. (PDF 187Â kb)

Results of sensitivity analyses. (PDF 577 kb)

Indications for caesarean section in suspected macrosomic infants. (PDF 187Â kb)

Maternal characteristics by region and birthweight in singleton term births. (PDF 365Â kb)