Percutaneous stereotactic radiofrequency lesioning for trigeminal neuralgia: determination of minimum clinically important difference in pain improvement for patient-reported outcomes

Neurosurgery
Vishruth K ReddyRobert A Mericle

Abstract

The Visual Analog Scale (VAS) and the Barrow Neurological Institute Pain Scale (BNI-PS) are 2 patient-reported outcome (PRO) tools frequently used to rate pain from trigeminal neuralgia (TN). Outcomes studies often use these patient-reported outcomes to assess treatment effectiveness, but it is unknown exactly what degree of change in the numerical scores constitutes the minimum clinically important difference (MCID). MCID remains uninvestigated for percutaneous stereotactic radiofrequency lesioning (RFL), a common surgical procedure for TN. To determine MCID values for the VAS and BNI-PS in patients undergoing RFL. Forty-three consecutive patients with TN who underwent RFL by a single surgeon were prospectively assessed with the VAS and BNI-PS preoperatively and 3 years postoperatively. Three anchors were used to assign each patient's outcome: satisfaction, willingness to have the surgery again, and Health Transition Index. We then used 3 well-established, anchor-based methods to calculate MCID: average change, minimum detectable change, and change difference. Patients experienced substantial improvement in both VAS (9.81 vs 3.35; P < .001) and BNI-PS (4.95 vs 2.44; P < .001) after RFL. The 3 MCID calculation methods generated...Continue Reading

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Citations

Jun 22, 2016·Neurosurgery Clinics of North America·Joanna M Zakrzewska, Clare Relton
Jun 22, 2016·Neurosurgery Clinics of North America·Sukhmeet K Sandhu, John Y K Lee
Mar 4, 2020·World Neurosurgery: X·Carolina Venda NovaRicheal Ni Riordain
May 3, 2021·European Journal of Pain : EJP·Carolina Venda NovaRicheal Ni Riordain

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