en اپيدميولوژي Epidemiology پژوهشي Original Article <p style="text-align: justify;"><strong>Abstract</strong><br> <strong>Background and purpose:</strong> High-risk pregnancy is referred to a situation in which mother, fetus&nbsp;or neonate are in higher risk of morbidity or mortality. Because of adverse outcomes of high-risk&nbsp;pregnancies, this study aims to determine these outcomes in the North of Iran.&nbsp;<br> <strong>Materials and Methods: </strong>We recruited 803 urban and rural pregnant women in this crosssectional&nbsp;study via consensus method. Data were collected by a questionnaire and analyzed using&nbsp;descriptive statistics [mean, standard deviation (SD)], chi-square test and multivariate logistic&nbsp;regression model. All data analyses were performed using SPSS software and P < 0.05 was&nbsp;considered significant.<br> <strong>Results</strong>: Mean &plusmn; SD, minimum and maximum age of participants were 27.0 &plusmn; 6.2, 14 and 44&nbsp;years, respectively, 26.3% of which were urban residences. The frequency of adverse outcomes&nbsp;of pregnancy (stillbirth, abortion, and weight under 2500 g) was 10.8%. According to the&nbsp;multivariate logistic regression model, preeclampsia was significantly associated with adverse&nbsp;outcomes of high-risk pregnancy (Odds ratio = 2.7, 95% confidence interval: 1.03-7.10).<br> <strong>Conclusion:</strong> Our study showed that preeclampsia during pregnancy is a predictive factor of&nbsp;adverse outcomes of pregnancy such as abortion, stillbirth, and low birth weight.</p> Pregnancy, High-Risk, Abortion, Stillbirth, Low Birth Weight 40 46 http://jhs.mazums.ac.ir/browse.php?a_code=A-10-478-2&slc_lang=en&sid=1 Mahmood Moosazadeh 10031947532846004933 10031947532846004933 No Health Sciences Research Center, School of Health, Mazandaran University of Medical Sciences, Sari, Iran Seyed Abdolhassan Naghibi anaghibi1345@yahoo.com 10031947532846004934 10031947532846004934 Yes Department of Public Health, Health Sciences Research Center, School of Health, Mazandaran University of Medical Sciences, Sari, Iran Soghra Khosravi 10031947532846004935 10031947532846004935 No Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran Mahdi Afshari 10031947532846004936 10031947532846004936 No Department of Community Medicine, School of Medicine, Zabol University of Medical Sciences, Zabol, Iran Roghaieh Afsargharehbagh 10031947532846004937 10031947532846004937 No Urmia University of Medical Sciences, Urmia, Iran