Table 4 Responder analysis
% Pain reduction | Treatment groups | Group differences | |
|---|---|---|---|
Chiropractic Care (%) | Integrated care (%) | Chiropractic care minus integrated care | |
Week 12* | |||
No reduction or increase | 17.7 | 12.9 | 4.8 (− 5.3 to 15.1) |
 ≥ 30% | 64.6 | 72.3 | −7.7 (−20.3 to 5.2) |
  ≥ 50% | 50.0 | 56.4 | −6.4 (−19.9 to 7.4) |
  ≥ 75% | 15.6 | 21.8 | −6.2 (−16.9 to 4.9) |
100% | 1.0 | 5.9 | −4.9 (−11.4 to 0.7) |
Week 26^ | |||
No reduction or increase | 26.6 | 21.6 | 4.9 (−7.2 to 16.9) |
  ≥ 30% | 54.3 | 61.9 | −7.6 (−21.1 to 6.3) |
  ≥ 50% | 28.7 | 43.3 | −14.6 (−27.4 to −1.0) |
 ≥ 75% | 14.9 | 18.6 | −3.7 (−14.3 to 7.1) |
100% | 2.1 | 3.1 | −1.0 (−6.8 to 4.7) |
Week 52†| |||
No reduction or increase | 25.3 | 16.5 | 8.8 (−2.9 to 20.5) |
  ≥ 30% | 50.6 | 64.9 | −14.4 (−27.9 to −0.1) |
  ≥ 50% | 36.8 | 48.5 | −11.7 (−25.2 to 2.6) |
  ≥ 75% | 19.5 | 21.6 | −2.1 (−13.6 to 9.7) |
 100% | 3.4 | 5.2 | −1.7 (−8.4 to 5.2) |