The Dallas Pain Questionnaire (DPQ) assesses the impact of low back pain (LBP) on four components (0-100) of daily life. We estimated the minimal clinically important improvement (MCII) and the patient acceptable symptom state (PASS) values of DPQ in LBP patients.
Marty, M., Courvoisier, D., Foltz, V., Mahieu, G., Demoulin, C., Gierasimowicz, A., Norberg, M., de Goumoëns, P., Cedraschi, C., Rozenberg, S., & Genevay, S. (2016). How much does the Dallas Pain Questionnaire score have to improve to indicate that patients with chronic low back pain feel better or well? European Spine Journal, 25(1), 304-309. https://doi.org/10.1007/s00586-015-3957-3 (Original work published 2015)