Document Type : Research articles
Authors
1 School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2 Midwifery and Reproductive Health Research Center, Department of Midwifery and Reproductive Health, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3 Department of Biochemistry, Cellular and Molecular Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4 Urology Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
5 Midwifery and Reproductive Health Research Center, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Abstract
Background: Gestational diabetes is the most common antenatal medical complication that is associated with adverse short- and long-term maternal, fetal, and neonatal outcomes. Reducing maternal and fetal complications requires the early diagnosis of ges- tational diabetes. Unconjugated Estriol (UE) has led to insulin resistance under in vitro conditions.
Objectives: This study aimed to determine the predictive power of unconjugated estriol in the diagnosis of gestational diabetes in Tehran, Iran.
Methods: The present historical cohort study was conducted on 523 pregnant women presenting to two university-affiliated hospi- tals in Tehran, Iran, 2017 - 2018. The level of unconjugated estriol was determined at the 14th - 17th week of pregnancy, and gestational diabetes was diagnosed at the 24th - 28th week of pregnancy using the oral glucose tolerance test with 75 grams of glucose. Data were collected through interviews and sampling was carried out using a convenience sampling method.
Results: Out of 523 pregnant women examined, 63 (12%) were placed in the gestational diabetes group and 460 (88%) in the non- gestational diabetes group. The best cutoff point for unconjugated estriol was determined using the ROC curve as 0.965 MOM. We obtained 66.66% sensitivity, 54.78% specificity, 16.8% positive predictive value, and 92.30 negative predictive value for the UE test.
Conclusions: Given the acceptable sensitivity (66.66%) and specificity (54.78%) obtained for the UE test and the area under the ROC curve of 0.60, it appears that the UE test can be considered a new, accessible, and reliable screening test for gestational diabetes.
Keywords
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