title: Longitudinal Monitoring of Patients With Chronic Low Back Pain During Physical Therapy Treatment Using the STarT Back Screening Tool.
abstract: Study Design Preplanned secondary analysis of a randomized clinical trial. Background The STarT Back Screening Tool (SBST) was developed to screen and to classify patients with low back pain into subgroups for the risk of having a poor prognosis. However, this classification at baseline does not take into account variables that can influence the prognosis during treatment or over time. Objectives (1) To investigate the changes in risk subgroup measured by the SBST over a period of 6 months, and (2) to assess the long-term predictive ability of the SBST when administered at different time points. Methods Patients with chronic nonspecific low back pain (n = 148) receiving physical therapy care as part of a randomized trial were analyzed. Pain intensity, disability, global perceived effect, and the SBST were collected at baseline, 5 weeks, 3 months, and 6 months. Changes in SBST risk classification were calculated. Hierarchical linear regression models adjusted for potential confounders were built to analyze the predictive capabilities of the SBST when administered at different time points. Results A large proportion of patients (60.8%) changed their risk subgroup after receiving physical therapy care. The SBST improved the prediction for all 6-month outcomes when using the 5-week risk subgroup and the difference between baseline and 5-week subgroup, after controlling for potential confounders. The SBST at baseline did not improve the predictive ability of the models after adjusting for confounders. Conclusion This study shows that many patients change SBST risk subgroup after receiving physical therapy care, and that the predictive ability of the SBST in patients with chronic low back pain increases when administered at different time points. Level of Evidence Prognosis, 2b. J Orthop Sports Phys Ther 2017;47(5):314-323. Epub 29 Mar 2017. doi:10.2519/jospt.2017.7199.
authors.forename: Flávia Cordeiro
authors.initials: FC
authors.lastname: Medeiros
authors.forename: Leonardo Oliveira Pena
authors.initials: LOP
authors.lastname: Costa
authors.forename: Marco Aurélio Nemitalla
authors.initials: MAN
authors.lastname: Added
authors.forename: Evelyn Cassia
authors.initials: EC
authors.lastname: Salomão
authors.forename: Lucíola da Cunha Menezes
authors.initials: LDCM
authors.lastname: Costa
mesh_terms: D000328:Adult; D000368:Aged; D059350:Chronic Pain; D004185:Disability Evaluation; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008137:Longitudinal Studies; D017116:Low Back Pain / Q000145:classification / Q000175:diagnosis / Q000628:therapy*; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D010147:Pain Measurement; D026741:Physical Therapy Modalities; D011379:Prognosis; D011446:Prospective Studies; D016032:Randomized Controlled Trials as Topic; D012307:Risk Factors
keywords: STarT Back Screening Tool; assessment; low back pain; prognosis