To identify factors associated with low back pain (LBP) in children and adolescents.
A systematic review was conducted (Prospero CRD42016038186). Observational studies analyzing LBP risk factors among subjects aged between 9 and 16 were searched for in 13 electronic databases and 8 specialized journals until March 31st, 2016, with no language restrictions. Additionally, references in the identified studies were manually tracked. All identified studies which included ≥50 subjects aged 9 to 16, were reviewed. Their methodological quality was assessed by two reviewers separately, using validated tools which scored, from worst to best, 0-100 for cross-sectional and 0-12 for cohort studies. A sensitivity analysis only included studies which had adjusted for confounders, ≥500 subjects and a methodological score of ≥50%.
5142 citations were screened and 61 studies, including 137,877 subjects from 5 continents, were reviewed. Their mean (range) methodological scores were 74.56 (50-100) for cross-sectional studies, and 7.36 (5-9) for cohort ones. Studies had assessed 35 demographic, clinical, biological, family, psychological, ergonomic and lifestyle risk factors. Mean (range) prevalence of LBP ranged between 15.25% (3.20,57.00) for point prevalence, and 38.98% (11.60, 85.56) for lifetime prevalence. Results on the association between LBP and risk factors were inconsistent. In the sensitivity analysis, “older age” and “participation in competitive sports” showed a consistent association with LBP.
Future studies should focus on muscle characteristics, the relationship between body and backpack weights, duration of carry, characteristics of sport practice, and factors associated with chronic pain.
*Faculty of Health Sciences, Catholic University San Antonio, UCAM, Murcia, Spain. Spanish Back Pain Research Network
†Spanish Back Pain Research Network
‡Unidad de la Espalda Kovacs. Hospital Universitario de Moncloa. Avda. Valladolid, Nº 83. 28008 Madrid, Spain
§Iberoamerican Cochrane Centre, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain. CIBER Epidemiología y Salud Pública (CIBERESP), Spain
∥Faculty of Health Sciences, University of León. Spain
¶Institute of Biomedicine (IBIOMED), University of León. Spain. Visiting Researcher and Professor University of the Basque Country, Spain
Source of Funding: This study was funded by the Spanish Back Pain Research Network, a non-profit private organization specializing in medical research on neck and back pain, with no links to the health industry.
Conflicts of Interest: The authors do not have any conflicts of interest to report.
Reprints: Francisco M. Kovacs, MD, PhD, Unidad de la Espalda Kovacs. Hospital Universitario Moncloa. Avda. Valladolid Nº 83. 28008 Madrid. Spain (e-mail: firstname.lastname@example.org).
Received February 13, 2017
Accepted August 29, 2017