Prevalence of Vitamin D deficiency and related factors Among Pregnant Women referred to Masjed Soleimam health centers in 2014

Vitamin D deficiency in pregnancy is widespread in many parts of the world، and there is an association between vitamin D level and adverse outcomes of pregnancy. Considering the importance of maternal health progress، this study was performed with aim to determine the prevalence of vitamin D deficiency in first trimester of pregnancy and evaluation of related factors affecting this vitamin. This cross-sectional study was performed on 1581 pregnant women during their first prenatal visit in Masjed-Soleiman health centers in 2014. Maternal data was collected using a questionnaire. A blood sample was taken from each woman to measure serum 25-hydroxy vitamin D using ELISA method by Immunodiagnostic Systemdimided (IDS) kit. Was analyzed by SPSS software (version 18)، and descriptive and analytical tests (Spearman، variance analysis، independent t). P<0. 05 was consider significant. Mean serum level of 25 (OH) D was 13. 05 ng/ml (SD± 6. 36) and overall prevalence of vitamin D deficiency estimated as 84%. Mean serum level of was significantly associated with duration of sun exposure، use of sunscreens، type of Hejab and type of dwelling (P<0. 0001). But، there was no correlation between mean level of vitamin D and maternal age (P=0. 773)، gestational age (P=0. 174)، parity (P=0. 509)، and occupation (P=0. 786). Considering high prevalence of vitamin D deficiency among pregnant women in Masjed-Soleiman، it seems that screening and vitamin D supplementation be essential in this population.