Patient-Reported Outcome-Based Quality Indicators in Dutch Primary Care Physical Therapy for Patients With Nonspecific Low Back Pain: A Cohort Study.

Only 140 of 1009 physical therapists and 85 of 219 practices met the 30-patient threshold for comparison, so many practices could not be included in the multilevel analysis. Not all patient records contained all outcome measures, so the number of episodes available for each indicator varied. Missing Start Back Tool values prevented analysis within low, medium, and high risk subgroups, even though those subgroups were clinically relevant. Physical therapists were recruited by convenience sampling, which may have selected therapists already willing to compare outcomes. Patients received usual care chosen by each therapist, so changes cannot be attributed to physical therapy or to any specific treatment. The core set was selected in focus groups without formal voting. Symptoms may improve or worsen on their own, and extreme scores may move toward the average over time, which could influence indicator scores.

Dutch health insurers CZ and the Friesland funded the study. The paper states that the sponsors had no influence on the process or outcomes and played no role in design, conduct, or reporting.

Do not read the selected indicators as proof that physical therapy improves low back pain. The study measured outcomes from usual care and developed quality indicators. It did not compare treatment groups or show that a specific intervention caused the changes.