Fatemeh Effati Daryani - Instructor, Reproductive Health Research Center, Midwifery Department, Faculty of Nursing and Midwifery, UrmiaUniversity of Medical Sciences, Urmia, Iran
Mojgan Mirghafourvand - Associate Professor, Social Determinants of Health Research Center, Tabriz University of Medical Sciences, Tabriz,Iran
Sakineh Mohammad-Alizadeh-Charandabi - Professor, Midwifery Department, Faculty of Nursing and Midwifery, Social Determinants of Health ResearchCenter, Tabriz University of Medical Sciences, Tabriz, Iran
Azam Mohammadi - Ph.D Student of Reproductive health, Department of Midwifery, Students’ Research Committee, Faculty of Nursingand Midwifery, Tehran University of Medical Sciences, Tehran , Iran
Somayeh Zarei - MSc at Midwifery, Shohadaye Qom Hospital, Qom University of Medical Sciences, Qom, Iran

Background and Aim : This study aimed to determine sleep quality and its socio-demographic predictorsregarding three trimesters of pregnancy.Methods : This cross-sectional study was conducted on 605 pregnant women referred to health centers inTabriz, Iran, using a two-stage cluster sampling method. Data were collected using socio-demographiccharacteristics questionnaire and the Pittsburgh Sleep Quality Index.Results : The meanSD of the total sleep quality scores were estimated at 5.222.52, 5.823.07, 8.603.03,and 6.563.24 in the first, second, and third trimester, and during the whole pregnancy, respectively.Moreover, the study results showed that 81 (40.1%), 105 (53.0%), 172 (83.9%), and 358 (59.2%) mothersexperienced sleep disorder in the first, second, and third trimester, and during the whole pregnancy,respectivelyConclusion : According to the results of this study, sleep quality predictors may help health providersidentify high-risk pregnant women in terms of sleep disorder to provide them with appropriateinterventional programs

Iran, Pregnancy, Sleep