Osteoarthritis

Study design and protocol of a randomized, pragmatic, comparative effectiveness trial evaluating a sequenced strategy for improving outcomes in people with knee osteoarthritis pain (strategy for Knee OsteoArthritis Pain (SKOAP)): Conservative treatment evaluation

Semin Arthritis RheumPublished Study protocol of a randomised controlled trial

Study context

Population
Individuals reporting knee OA pain
Planned comparison
Best Practices (BP) alone vs BP plus duloxetine vs BP plus duloxetine and painTRAINER
Primary endpoint
Pain
Methodological detailsmulti-site, pragmatic, comparative effectiveness, two-phase sequential design, Phase 1 of the trial sequence (conservative treatments), Analysis: modified Intention to Treat (mITT) and two Per-Protocol analyses (PP-ROP and PP-MinED)
  • Multi-site
  • Pragmatic
  • Comparative effectiveness
  • Two-phase sequential design
  • Phase 1 of the trial sequence (conservative treatments)
  • Analysis: modified Intention to Treat (mITT) and two Per-Protocol analyses (PP-ROP and PP-MinED)

No results yet. This paper sets out the design of a trial; its results are to come.

Original publication

Study design and protocol of a randomized, pragmatic, comparative effectiveness trial evaluating a sequenced strategy for improving outcomes in people with knee osteoarthritis pain (SKOAP): Conservative treatment evaluation. Semin Arthritis Rheum. Published 23 September 2025. doi:10.1016/j.semarthrit.2025.152834

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