Table 2 Drop-out analysis
From: Effects of weekly pain monitoring on back pain outcomes: a non-randomised controlled study
Patient characteristics at baseline | SMS group OR (95% CI) N = 1,013 responders N = 610 non-responders | Control group OR (95% CI) N = 802 responders N = 423 non-responders | Interaction between group and characteristic OR (p-value) |
|---|---|---|---|
Age (years) | 0.98 (0.97–0.99) | 0.97 (0.96–0.98) | 1.01 (p = 0.1) |
Female (ref. male) | 0.99 (0.80–1.21) | 0.80 (0.63–1.02) | 1.23 (p = 0.2) |
Back pain intensity, NRS (0–10) | 1.01 (0.96–1.06) | 1.02 (0.96–1.08) | 0.99 (p = 0.8) |
Activity limitation, RMDQ (0–100) | 1.00 (1.00–1.00) | 1.00 (1.00–1.01) | 1.00 (p = 0.8) |
Ability to control pain, NRS (0–10) | 0.92 (0.88–0.96) | 0.94 (0.89–0.99) | 0.98 (p = 0.5) |
Recovery expectations, NRS (0–10) | 0.98 (0.94–1.01) | 0.98 (0.94–1.02) | 0.99 (p = 0.8) |
STarT risk profile | |||
Low (ref) | |||
Medium | 1.09 (0.86–1.39) | 0.95 (0.72–1.25) | 1.15 (p = 0.4) |
High | 1.49 (1.14–1.95) | 1.36 (1.00–1.85) | 1.10 (p = 0.6) |
Episode duration | |||
< 1 week (ref) | |||
1–4 weeks | 0.92 (0.71–1.19) | 0.96 (0.71–1.29) | 0.95 (p = 0.8) |
1–3 months | 0.79 (0.55–1.12) | 0.73 (0.50–1.08) | 1.08 (p = 0.8) |
> 3 months | 1.13 (0.86–1.49) | 1.41 (1.02–1.96) | 0.80 (p = 0.3) |