Patient-friendly summary
If you read nothing else
Bottom line
In UK primary care, matching back pain treatment to a patient's prognostic risk improved disability outcomes and reduced costs versus usual best practice, though benefits for the highest-risk group were not sustained to 12 months.
Strong evidencePublished
Evidence hierarchy
Study participants
Adults aged 18+ consulting about back pain (with or without radiculopathy) at ten general practices in England
Study Summary
This UK randomised controlled trial tested whether matching back pain treatment to a patient's risk of poor recovery (low, medium, or high risk, sorted by the Keele STarT Back Screening Tool) works better than current best primary care. Among 851 adults with back pain at ten English general practices, the stratified-care group had significantly greater reductions in disability (Roland Morris Disability Questionnaire) at both 4 and 12 months than the control group, with effect sizes of 0.32 and 0.19 respectively. Stratified care also produced a small gain in quality-adjusted life years and was less costly, including fewer days off work. The authors conclude that prognostic screening with matched treatment pathways may improve outcomes and efficiency in back pain care, though some risk-group benefits (notably the high-risk group at 12 months) were not statistically significant.
Key Findings
| Finding | Detail | Impact |
|---|---|---|
| Stratified care reduced disability more than usual best practice | Adjusted mean change in RMDQ score was significantly higher in the intervention group at 4 months (4.7 vs 3.0; between-group difference 1.81, 95% CI 1.06-2.57) and at 12 months (4.3 vs 3.3; difference 1.06, 95% CI 0.25-1.86), equating to effect sizes of 0.32 and 0.19. | High |
| Stratified care saved money and slightly improved quality of life | At 12 months stratified care was associated with 0.039 additional QALYs and lower mean back-pain-related health-care costs (£240.01 vs £274.40), with the intervention dominant (greater benefit at lower cost) in 92% of bootstrap replications. | High |
| Low-risk patients did just as well with minimal treatment | Outcomes in the low-risk group were non-inferior even though far fewer low-risk intervention patients (7%) were referred for further treatment than low-risk controls (49%), supporting that many low-risk patients receive unnecessary treatment under usual care. | High |
| High-risk benefit was significant short-term but not at 12 months | For high-risk patients, the between-group RMDQ difference was significant at 4 months (mean change 6.8) but the 12-month difference (5.9) was not significant; the authors note further research is needed to confirm whether benefits are sustained. | Medium |
| Reduced work absence and resource use | The intervention group took fewer days off work, attended fewer physiotherapy sessions (mean 4.2 vs 5.1) over a shorter span (47.7 vs 69.4 days), and was associated with a mean indirect productivity cost saving of £675 over 12 months. | Medium |
Adjusted mean change in RMDQ score was significantly higher in the intervention group at 4 months (4.7 vs 3.0; between-group difference 1.81, 95% CI 1.06-2.57) and at 12 months (4.3 vs 3.3; difference 1.06, 95% CI 0.25-1.86), equating to effect sizes of 0.32 and 0.19.
At 12 months stratified care was associated with 0.039 additional QALYs and lower mean back-pain-related health-care costs (£240.01 vs £274.40), with the intervention dominant (greater benefit at lower cost) in 92% of bootstrap replications.
Outcomes in the low-risk group were non-inferior even though far fewer low-risk intervention patients (7%) were referred for further treatment than low-risk controls (49%), supporting that many low-risk patients receive unnecessary treatment under usual care.
For high-risk patients, the between-group RMDQ difference was significant at 4 months (mean change 6.8) but the 12-month difference (5.9) was not significant; the authors note further research is needed to confirm whether benefits are sustained.
The intervention group took fewer days off work, attended fewer physiotherapy sessions (mean 4.2 vs 5.1) over a shorter span (47.7 vs 69.4 days), and was associated with a mean indirect productivity cost saving of £675 over 12 months.
Strengths
- High internal validity: remote randomisation, protocol-driven treatments, and masking of outcome assessors
- Large sample powered to examine effects separately within low-, medium-, and high-risk subgroups
- Consistent results across several distinct outcomes (disability, pain, mood, quality of life, work days)
- Sensitivity analyses (complete-case and adjustment for therapist effects) did not change clinical or economic conclusions
- Integrated within-trial economic evaluation with bootstrap cost-effectiveness analysis
Limitations
- Greater-than-anticipated loss to follow-up (about 25%) with a slight imbalance in attrition between groups; non-responders were younger than responders
- Participants, administrators, and physiotherapists could not be masked to allocation
- Complex physiotherapy delivery (variable sessions and therapists) meant therapist-effect adjustment was limited to a designated main therapist, leaving possible residual variability
- The high-risk group's benefit was not statistically significant at 12 months, so durability of benefit is uncertain
- Conducted in UK primary care; results may not generalise to other health-care settings or to other musculoskeletal complaints
- The design cannot determine whether subgroup benefits came from better referral patterns or from the content/quality of follow-up physiotherapy
Key Takeaways for Patients
What This Means for You
- 01A short questionnaire (the STarT Back Screening Tool) can sort people with back pain into low, medium, or high risk of a slow recovery, helping match each person to the right level of care.
- 02If your back pain is low risk, you may recover just as well with advice, education, and self-management (such as staying active and using resources like the Back Book) as with extra physiotherapy referrals.
- 03Matching treatment to risk was linked to less disability, fewer days off work, and lower costs over a year compared with usual care.
- 04Higher-risk patients may benefit from more intensive, psychologically informed physiotherapy, though the longer-term (12-month) benefit for the highest-risk group was less certain in this trial.
- 05This approach was tested in UK primary care and may not apply identically to other health systems or to other musculoskeletal conditions.