Abstract

Background A service delivery model using group acupuncture (AP) may be more cost-effective than individual AP in general, but there is little evidence to assess whether group AP is a comparable treatment in terms of efficacy to standard individual AP. The study aimed to compare the group to individual delivery of 6-week AP among cancer patients with pain. Methods The study design was a randomized noninferiority trial of the individual (gold standard treatment) vs. group AP for cancer pain. The primary outcome was pain interference and severity, measured through the Brief Pain Inventory (BPI). Secondary outcomes included measures of mood, sleep, fatigue, and social support. Changes in outcomes from pre- to postintervention were examined using linear mixed effects modeling and noninferiority was inferred using a noninferiority margin, a difference of change between the two arms and 95% CIs. Pain interference was tested with a noninferiority margin of 1 on the BPI, while pain severity and secondary outcomes were compared using conventional statistical methods. Results The trial included 74 participants randomly allocated to group (35) or individual (39) AP. The noninferiority hypothesis was supported for pain interference [Ө − 1, Δ 1.03, 95% CI: 0.15–2.20] and severity [Ө − 0.81, Δ 0.52, 95% CI:.33–1.38] as well as for mood [Ө − 7.52, Δ 9.86, 95% CI: 0.85–18.86], sleep [Ө − 1.65, Δ 2.60, 95% CI: 0.33–4.88], fatigue [Ө 8.54, Δ − 15.57, 95% CI: 25.60–5.54], and social support [Ө.26, Δ − 0.15, 95% CI: − 0.42–0.13], meaning that group AP was not inferior to individual AP treatment. Both arms evidenced statistically significant improvements across all symptoms before and after the intervention. Effect sizes for the group vs. individual AP on outcomes of pain, sleep, mood, and social support ranged from small to very large and were consistently larger in the group condition. The total average cost-per-person for group AP ($221.25) was almost half that of individual AP ($420). Conclusions This is the first study to examine the noninferiority of group AP with the gold standard individual AP. Group AP was noninferior to individual AP for treating cancer pain and was superior in many health outcomes. Group AP is more cost-effective for alleviating cancer pain and should be considered for implementation trials.

Highlights

  • A service delivery model using group acupuncture (AP) may be more cost-effective than individual AP in general, but there is little evidence to assess whether group AP is a comparable treatment in terms of efficacy to standard individual AP. e study aimed to compare the group to individual delivery of 6-week AP among cancer patients with pain

  • Acupuncture (AP) is a therapeutic technique derived from Traditional Chinese Medicine (TCM) and is one complementary therapy modality that has been used for treating pain

  • Study Design. is study was a two-group noninferiority randomized controlled trial, with participants being randomized to receive either group or individual AP. e noninferiority trial design was chosen because our primary research question was whether group AP was inferior to the gold standard treatment for pain, individual AP, or not

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Summary

Introduction

A service delivery model using group acupuncture (AP) may be more cost-effective than individual AP in general, but there is little evidence to assess whether group AP is a comparable treatment in terms of efficacy to standard individual AP. e study aimed to compare the group to individual delivery of 6-week AP among cancer patients with pain. E noninferiority hypothesis was supported for pain interference [Ө − 1, Δ 1.03, 95% CI: 0.15–2.20] and severity [Ө − 0.81, Δ 0.52, 95% CI:.33–1.38] as well as for mood [Ө − 7.52, Δ 9.86, 95% CI: 0.85–18.86], sleep [Ө − 1.65, Δ 2.60, 95% CI: 0.33–4.88], fatigue [Ө 8.54, Δ − 15.57, 95% CI: 25.60–5.54], and social support [Ө.26, Δ − 0.15, 95% CI: − 0.42–0.13], meaning that group AP was not inferior to individual AP treatment. Both arms evidenced statistically significant improvements across all symptoms before and after the intervention. Along with its effectiveness for managing pain, the relatively low risk of side effects and the low number of adverse events make it an appealing treatment option for patients

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