@ARTICLE{Mahdavi, author = {Khani, S and Âbedian, K and Shahhoseini, Z and Mahdavi, M.R and }, title = {Relationship Between Preterm Delivery and Salivary Estriol Level}, volume = {20}, number = {79}, abstract ={Background and purpose: Preterm birth accounts for 10 percent of total deliveries and is the most important cause of neonatal mortality. Levels of salivary estriol is, among others, an important indicator for early detection of preterm labor. This study carried out to determine the relationship between preterm delivery and estriol level in saliva. Materials and methods: This nested case-control study was conducted on 466 pregnant women referred to health centers in Sari from 2008 to 2010. Saliva was obtained and frozen from pregnant women during 25 to 34 weeks of gestation. Âfter sampling and follow up of women until childbirth, women with preterm delivery (58 cases) considered as case group. Âmong the rest of the subjects, 58 women were matched for mean age, educational level and body mass index (BMÏ) considered as control group. The saliva samples were melted and estriol level was measured. Results: There was no significant difference between the two groups regarding age, parity, educational level and BMÏ. However there were significant differences between the two groups for gestational age at the time of sampling (P }, URL = {http://jmums.mazums.ac.ir/article-1-633-en.html}, eprint = {http://jmums.mazums.ac.ir/article-1-633-en.pdf}, journal = {Journal of Mazandaran University of Medical Sciences}, doi = {}, year = {2010} }