Tehran University of Medical Sciences Journal of Modern Rehabilitation 2538-385X 11 3 2017 07 01 181 188 EN Gholamreza Olyaei Department of Physiotherapy, School of Rehabilitation, Tehran University of Medical Sciences, International Campus, Tehran, Iran. Syed Asadullah Arslan Department of Physiotherapy, School of Rehabilitation, Tehran University of Medical Sciences, International Campus, Tehran, Iran. Mohammad Reza Hadian Department of Physiotherapy, School of Rehabilitation, Tehran University of Medical Sciences, International Campus, Tehran, Iran. AND Brain and Spinal Cord Injury Research Center (BASIR), Imam Khomeini Complex Hospital, Tehran, Iran. Hossein Bagheri Department of Physiotherapy, School of Rehabilitation, Tehran University of Medical Sciences, International Campus, Tehran, Iran. Mir Saeed Yekaninejad Brain and Spinal Cord Injury Research Center (BASIR), Imam Khomeini Complex Hospital, Tehran, Iran. Saeed Talebian Department of Physiotherapy, School of Rehabilitation, Tehran University of Medical Sciences, International Campus, Tehran, Iran. 2018 03 03 Introduction: Low back pain is the leading cause of activity limitation and work absence throughout the world among workers. Materials and Methods: Data were collected by using a self-administered questionnaire containing individual and work ergonomic items. The 11-point numeric scale (NPRS) was used to assess the pain intensity from the office workers at the time of the survey. Bivariate logistic regression analysis was used for predicting the risk factors of low back pain. Results: Demographic, personal, work ergonomic and psychosocial characteristics of office workers showed high prevalence of low back pain. The Point prevalence of LBP among the office workers of TUMS was 32.3% and the lifetime prevalence among them was 74.5%. Conclusion: High prevalence of LBP was reported among the office workers. Different individual as well as work related risk factors are worsening this condition which needs proper protective measures. https://jmr.tums.ac.ir/index.php/jmr/article/view/101 https://jmr.tums.ac.ir/index.php/jmr/article/download/101/73