•Treatment options for chronic back pain in patients ineligible for spine surgery are limited.

•Differential Target Multiplexed Spinal Cord Stimulation (DTM SCS)† has been shown to be an effective treatment for this patient population in 3 randomized controlled trials (RCTs)1-3 which have consistently shown responder rates greater than 80%, along with significant and durable reductions in both back and leg pain scores1-3.

•Although pain score reduction is a gold standard for assessing chronic pain clinical efficacy, functional outcomes are equally important assessments that can potentially provide a more holistic outlook on patient improvement.

•We assessed functional outcomes collected as part of 2 RCTs2,3 on DTM SCS for chronic back pain in patients ineligible for spine surgery, to evaluate the validity of these outcomes for assessment of clinical improvement.