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Objectives: This study investigated the prevalence of low back pain (LBP) and its risk factors among elementary-school students.Methods: In this cross-sectional study, 693 elementary students from Hamadan city, western Iran, were selected by multistage stratified cluster sampling. Data were collected through interviews using questionnaires. Posture and psychosocial elements were assessed using the observational Rapid Upper Limb Assessment (RULA) checklist and the standard Strengths and Difficulties Questionnaire, respectively. Penalized logistic regression with the group smoothly-clipped absolute deviation regularization method was used for variable selection and data analysis (α=0.05). The chi-square test was also used.Results: In total, 26.6% of the students (7-12 years old) reported LBP in the last month. Older age (odds ratio [OR], 3.08; 95% confidence interval [CI], 1.80 to 5.26), watching TV for more than 3 hours a day (OR, 2.62; 95% CI, 1.46 to 4.68), very short seat backrests (OR, 3.08; 95% CI, 1.61 to 5.90), excessively curved seat backrests (OR, 4.36; 95% CI, 2.08 to 9.13), very short desks (OR, 3.44; 95% CI, 1.61 to 7.35), a family history of LBP (OR, 2.49; 95% CI, 1.58 to 3.91), carrying a school bag on one shoulder (OR, 1.91; 95% CI, 1.03 to 3.54), and RULA scores of 3 (OR, 2.26; 95% CI, 1.13 to 4.50) or 4 (OR, 2.85; 95% CI, 1.37 to 5.91) were associated with LBP.Conclusions: A high prevalence of LBP was found among elementary-school students. This study underscores the importance of recognizing vulnerable children and teenagers and developing interventional health promotion programs to prevent LBP based on an appropriate consideration of its contributory factors. [ABSTRACT FROM AUTHOR]

Objectives: Traumatic brain injury (TBI) is preventable and expensive. The medical costs of TBI can be too high for some households and might lead to poverty, malnutrition, and loss of assets, which are called catastrophic expenditures. In this study, we investigated the incidence of catastrophic costs associated with TBI caused by road accidents in a province in northern Iran., Methods: This prospective study involved a 1-year follow-up after the accident. Data of 220 patients were collected from the medical records of the Poursina Hospital, Rasht, Iran from March 2018 to February 2020. Direct and indirect costs faced by the households of patients with TBI and catastrophic costs related to TBI were calculated. Regression models were obtained and sensitivity analyses were performed at the end of the study., Results: In total, the prevalence of households TBI-related catastrophic costs (TBICC) was 45.5% . Households of female patients (odds ratio [OR]: 0.289, p =0.042), households of retired patients (OR: 0.053, p =0.005), and households falling in the fifth quintile of wealth (OR: 0.370, p =0.050) faced lower TBICC compared to other groups. The Activities of Daily Living scores had a significant negative relationship with TBICC., Conclusions: Political interventions such as implementation of insurance schemes, exemptions from payment for certain groups, identification of poor households, and coverage of assistance services can protect households from catastrophic health expenditures., Competing Interests: Conflict of Interest: The authors have no financial conflicts of interest., (Copyright © 2023 Korean Neurotraumatology Society.)