en Health Health Original Research Original Research <p> <strong> Background: </strong>Considering the physical, emotional and psychological complications of early or delayed menopause on women`s life, it is necessary to determine associated factors of menopause age. This study designed to determine menopausal age and associated factors in women of Gorgan, i.e. the capital of Golestan province in the north-east of Iran. </p><p> <strong> Methods: </strong>In this cross-sectional study, 804 menopausal women in Gorgan were selected via two-stage sampling method in 2009. The study included only women who had undergone natural menopause and had their last menstrual bleeding at least one year before. Data were gathered through structured questionnaire that included individual characteristics, socioeconomic characteristics, menstrual and fertility characteristics and climacteric complaints. Socioeconomic status was defined using principal component analysis. Data were analyzed with T-student’s and ANOVA tests using SPSS version 16 (SPSS Inc, Chicago, IL, USA) for Windows.<strong></strong> </p><p> <strong> Results: </strong>The mean menopause age was 47.6±4.45 years with the median age of 48 years. The mean menopause age in women with first pregnancy before 30 years (47.58±4.47years), without pregnancy (46.26±4.90years) and without delivery (46.30±4.47years) was significantly lower than others (p<0.01). The mean menopause age was lower in single women (46.6±2.80 years), with low income level (47.7±4.39years) and smokers (47.6±4.45years) compared to others but these differences were not statistically significant (p> 0.05). Socioeconomic status was not associated significantly with menopause age (p>0.05). </p><p> <strong> <a name="OLE_LINK14"></a><a name="OLE_LINK13">Conclusion: </a></strong>This study illustrated that menstrual and fertility factors have influence on menopausal age while socioeconomic factors were not effective. </p> Menopausal age, socioeconomic status, Menstrual factors, Fertility factors, Climacteric complains, Iran. 50 56 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-1-571&slc_lang=en&sid=1 Ali Akbar Abdollahi abdollahy64@yahoo.com 20031947532846007630 20031947532846007630 No Golestan University of Medical Sciences, Gorgan, Iran. Mostafa Qorbani mqorbani1379@yahoo.com 20031947532846007631 20031947532846007631 Yes Department of Public Health, Alborz University of Medical Sciences, Karaj, Iran, & Department of Epidemiology, Tehran University of Medical Sciences, Tehran, Iran. Hamid Asayesh asayeshpsy@gmail.com 20031947532846007632 20031947532846007632 No Qom University of MedicalSciences, Qom, Iran. Aziz Rezapour rezapoor_a57@yahoo.com 20031947532846007633 20031947532846007633 No Hospital Management Research Center, Teheran University of Medical Sciences, Tehran, Iran & Baghiatolah University of Medical Sciences, Tehran, Iran. Mehdi Noroozi 20031947532846007634 20031947532846007634 No Shahid Beheshti University of Medical Sciences, Tehran, Iran. Mohammad Ali Soleimani soleimany.msn@gmail.com 20031947532846007635 20031947532846007635 No Faculty of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran. Hossain Ansari ansarih88@gmail.com 20031947532846007636 20031947532846007636 No Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.