prevalence rate of low back pain and its relationship to demographic factors, body mass index, and education in ergonomic principles among rural men,aqqala city, 2016.

background: in addition to individual problems and conditions, low back pain reduces working capacity, resulting in the waste of time and absence from the work, and increases healthcare costs and economic losses. this study aimed to determine the prevalence rate of low back pain and its relationship to demographic factors, body mass index, and education in ergonomic principles in rural men.   methods and materials: this study was a cross-sectional descriptive study. study population was consisted of215 men from the village of aqqala city. data collection tool was nordic questionnaire. data were analysis using spss software version 19 and chi-square test and descriptive statistics.   results: about 54.88% of the patients (67.82% workers and 40% farmers) during the last year have been experiencing discomfort in the lower back. χ2statistics analysis showed a significant relationship between low back pain and occupation, bmi, age, and education in ergonomic principles (p˂.05). there wasno relationship between low back pain and level of education (p=.085). only 13% of the participants were trained in ergonomic principles.   conclusions: considering the high prevalence rate of low back pain as well as significant relationship between bmi and education in ergonomic principles with back pain, the need is felt for training of these people in how to lose weight, how to implement ergonomic principles in laboring and agricultural activities and carrying heavy objects, how to avoid bad work situations, how to maintain and care for the waist, how to perform simple exercises for strengthening and flexibility of lower back muscles.