The Oswestry Disability Index is not a good measure for low back pain in adolescents: A Rasch analysis of data from 200 people.

Objective: To evaluate the psychometric properties of the modified Oswestry Disability Index in adolescents with low back pain through Rasch analysis.

Design: This is a psychometric study.

Setting: Physical therapy clinics of a large pediatric hospital in Columbus, Ohio (United States).

Development of a preliminary multivariable diagnostic prediction model for identifying active spondylolysis in young athletes with low back pain.

Aims: The primary aim of this study was to develop a diagnostic cluster of common clinical findings that would assist in ruling out an active spondylolysis in adolescent athletes with low back pain (LBP).

Design: Retrospective case-series.

Setting: Hospital-based sports medicine clinic.