Reproducibility of a low back pain questionnaire in Tunisian adolescents

The objective of this study was to evaluate the reproducibility of a 28-item survey questionnaire for back problems in Tunisian adolescents. A test-retest design was used to investigate the reproducibility of the results obtained using the said 28-item survey questionnaire. Participants were recruited from two schools in Monastir. Seventy-two adolescents from the seventh, eighth, and the ninth grade participated in the inquiry. They have a mean age of 14.01 years (SD 1.67, range 11-19). High levels of reproducibility were found for items that evaluated perceived characteristics of back problems and functional limitation (kappa coefficient=0.71-1.00). The results suggest that the questionnaire used in the present study provided reproducible information and can be used as a survey tool for the investigation of low back problems in adolescents.