Validation of the integral of pain relief as a measure of chronic pain treatment efficacy.

ABSTRACT:

Introduction

Several scales are currently in use to measure chronic pain and its variations with treatments, as patient-reported outcomes; however, they are based only on pain intensity and neglect the duration of pain relief, critical to compare the efficacy of different treatments.

Objectives

To assess the validity of the integral of pain relief (IPR), an index that combines the percentage and duration of pain relief, to compare the efficacy of various treatments.

Methods

Patients undergoing intra-articular corticosteroid injections for knee osteoarthritis were recruited to validate the IPR. The pain intensity was assessed at baseline, using 2 different pain scales; and at follow-up visits 2, 4, 6, 8, and 12 weeks after the injection; adding the IPR and the patient'

SUBMITTER: Wilderman I 

PROVIDER: S-EPMC12705064 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature