Table 1
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Patient Expectations of Benefit from Common Interventions for Low Back Pain and Effects on Outcome
Baseline demographics and self-reported variables for the intervention groups. Data are presented as mean and standard deviation unless otherwise indicated
| Thrust | Non-thrust | P value |
| n = 75 | n = 37 |
| Age (years) | 40.4±11.4 | 40.1±11.9 | 0.916 |
| Gender (female) (%) | 52 | 51 | 0.948 |
| BMI (kg/m) | 27.5±4.7 | 26.5±3.9 | 0.297 |
| Average pain (11-point numeric rating scale) | 5.3±1.2 | 5.1±1.3 | 0.440 |
| Symptom duration (days) | 49.4±33.8 | 51.2±37.4 | 0.794 |
| Oswestry disability index | 36.1±7.8 | 34.4±7.6 | 0.268 |
| Number of previous episodes | 1.4±1.2 | 1.3±1 | 0.808 |
| Proportion receiving workers compensation (%) | 9 | 16 | 0.349 |
| Believe manipulation will help | 63% | 52% | 0.407 |
| Successful outcome by visit 5 (%) | 84 | 19 | <0.001 |
