The Impact of Chiropractors on Workplace Productivity – A report based on little more that wishful thinking

In a recent post, I mentioned a new report which allegedly claimed that “employing chiropractors in the [English] health service could save £1.5 billion“. Thanks to ‘Blue Wode’, we can now read the original report, and I had a critical look at it. Here are some quotes of crucial passages from the report:

The objective of this analysis was to establish how chiropractors could help to address the unmet need of people with MSK [musculoskeletal] conditions, who are currently absent from work due to these conditions, on NHS MSK physiotherapy waiting lists …

To assess the available evidence on the relative effectiveness of chiropractors, physiotherapists and osteopaths a pragmatic literature review was undertaken. This consisted of a rapid, pragmatic search of existing literature evidence to explore the effectiveness of chiropractic interventions (in terms of productivity/return to work) compared with physiotherapists and/or osteopaths … The strategies were not designed to be ‘comprehensive’ but focused to target records for relevant studies whilst retrieving record numbers that were manageable within the project timescales and available resources…

The results of the analysis are based on the assumption that there are equivalent work-related outcomes associated with MSK physiotherapy and chiropractic care…

1,270 records were retrieved from the database searches and 41 records were sent by the BCA. 101 duplicates were removed, and the remaining 1,210 references were screened for inclusion. 18 studies met the eligibility criteria and were included in data extraction (see Appendix B for the study flow diagram). Included studies had the following study designs: five systematic reviews [29-32] (of which one was only a summary [33]), three non-systematic reviews [34, 35] with one running a meta analysis [36], five randomised controlled trials [37-41], three cohort studies [42-44], and two case series studies [26, 45]…

A pragmatic review of literature found that evidence of the effectiveness of chiropractors in helping people with MSK conditions to get back to work is sparse and poor quality. There is weak evidence to suggest that chiropractors treating MSK conditions would be able to achieve equivalent return-to-work outcomes as physiotherapists. If more robust evidence could be developed, it is feasible that chiropractors could be used to address supply shortages in treatment for MSK conditions. This would require the NHS to consider closely the clinical governance arrangements it would need to put in place to ensure patient safety. It would also need to review the type of treatment and advice that chiropractors were able to provide for people with MSK conditions.

The initial analysis carried out for this study estimated that there are almost 1.6 million people unable to work due to an MSK condition in the UK. Spare capacity in the chiropractic profession indicates that around 114,000 more people per year could be treated by chiropractors. This represents around 7% of the current waiting list. Chiropractors have an average waiting time of 1.5 weeks compared with a minimum of 11 weeks for physiotherapists.

If the spare chiropractor capacity was used to address MSK conditions preventing people from working, then this could improve workforce productivity by reducing the time people are waiting for treatment. Adopting a simple analysis, assuming that all of the spare capacity could be used in the most efficient way, the estimated value of the improvement in productivity is £612 million per year. Using the Markov model to factor in a wider range of potential outcomes provides a more conservative, more robust estimated value of £399 million per year. If minimum rather that median wages are used to value the productivity gain based on an 11 week wait then it would reduce to £258 million.

A range of factors may increase or decrease the potential productivity gains. If the 11-week waiting time for physiotherapists is an under-estimate and the waiting times are 18 or 24 weeks, then the productivity gain would increase to £713 million and £1 billion respectively.

This analysis focused on productivity costs only, but people may also potentially have better health outcomes and lower treatment costs if they are treated more quickly.

Recommendations
Key recommendations emerging from this research are:

• The NHS should consider commissioning pilot research studies to generate evidence to make the case for the use of chiropractors in providing treatment for people with MSK conditions to allow them to return to work more quickly.
• The NHS should consider how the potential use of chiropractors to provide treatment and advice for people with MSK conditions can help to address the demand, capacity and financial challenges facing the health and social care system. This would need to be within the constraints of clinical guidelines and governance, to ensure safety and effective outcomes.

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And here are a few critical points:

• What on earth is a “pragmatic literature review”; was the term invented to disguise tha fact that the review is not systematic and thus is a bonanza in cherry-picking? I had a look at the cited literature and can confirm that any critical assessment of chiropractic has been excluded.
• “The results of the analysis are based on the assumption that there are equivalent work-related outcomes associated with MSK physiotherapy and chiropractic care.” Are you kidding me? I thought the aim was to “assess the available evidence on the relative effectiveness of chiropractors, physiotherapists and osteopaths”. How can you then assume equivalent outcomes as a basis for conducting the research?
• “Included studies had the following study designs: five systematic reviews [29-32] (of which one was only a summary [33]), three non-systematic reviews [34, 35] with one running a meta analysis [36], five randomised controlled trials [37-41], three cohort studies [42-44], and two case series studies [26, 45].” So, just 5 RCTs are the basis of the evaluations? What did you do with the dozens of other RCTs in this area? Did they perhaps not fit your conclusions?
• “If more robust evidence could be developed, it is feasible that chiropractors could be used to address supply shortages in treatment for MSK conditions.” However, I predict that more robust evidence will show the opposite of what you seem to wish!
• “Ensure patient safety”. Yes, thanks for mentioning safety. The report neglects safety completely. In view of the known risks of chiropractic this seems a serious mistake!
• “The estimated value of the improvement in productivity is £612 million per year.” From my comments above, it follows that this wild and largely unsubstantiated estimate was guided by little more than wishful thinking.
• “This analysis focused on productivity costs only, but people may also potentially have better health outcomes and lower treatment costs if they are treated more quickly.” More likely people experience health outcomes that are very similar to those of doing nothing at all. In this case, it would follow that a lot of money might be saved if we scrap MSK treatments altogether.

This report is a transparent and dilettante attempt to push more chiropractic on the NHS, a move that would not improve much and could even put a few patients in wheelchairs.