If CIHR will be providing funding to one Canadian team to participate in the ME/CFS Collaborative Project, it seems vitally important that steps are taken to ensure that actual ME patients are studied. This is less likely to occur as long as those advocating for ME patients in Canada continue to promulgate the falsehood that 580,000 Canadians
have been diagnosed based on data gathered by Statistics Canada.
The Canadian Community Health Survey (CCHS) collected self-reported data by telephone. Surveyed individuals were asked if they had been diagnosed with CFS or ME. No diagnostic criteria was established, nor was any safeguard in place to ensure responders were diagnosed by physicians qualified to do so.
It is often claimed that Canada has the highest ME rate in the world, and also that our incidence is 4X that of other countries. Do other countries, perhaps, report clinical diagnosis? Regardless, unless all countries use the same diagnostic criteria and survey method, making comparisons is meaningless.
From Diagnosis and Treatment of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome: (
https://www.ncbi.nlm.nih.gov/books/NBK293916/)
“As with other medical syndromes that involve a multitude of symptoms and lack a definitive diagnostic test, differentiating one disease state from another similar or overlapping condition becomes a challenge . . . This makes the prevalence of ME/CFS difficult to assess.”
According to the report linked above, ME/CFS prevalence was 4.3 times higher when determined by
self report (as in the CCHS) compared with
clinical assessment, in which case the Canadian prevalence of “true ME” (580,000/4.3) could instead be approximately 135,000. This is comparable to the high-end of the prevalence range most commonly quoted -- .2 percent (73,000) to .4 percent (146,000).
Advocates claim that there is very little awareness and use by physicians in Canada of the Canadian Consensus Criteria for ME, and also that 44 percent of Canadians living with ME report that their GP is “not at all” familiar with ME. Based on these statements, plus the institutional bias, disease denial and inaccurate physician education claimed to exist in Canada, how is it possible that 580,000 Canadians have been diagnosed by physicians? Who are these physicians, and how many ME patients would each need to have diagnosed to reach that huge patient number? And if there are enough knowledgeable and qualified physicians to diagnose 580,000 patients, why do we have such a hard time finding them?
One graph from the CCHS shows that 22.5 percent of “Chronic Fatigue Syndrome” patients aged 18 – 64 are permanently unable to work. This means that 77.5 percent of the survey responders are working. But, according to the #MEAction website, the disease “leaves 75% of those affected unable to work”. Why the discrepancy? What does this tell us about the responders to the CCHS? Might many of them not have ME at all, but instead be chronically fatigued for some other reason? Or, did the survey capture many responses from those very mildly affected?
ME patients have witnessed more than their fair share of propaganda from researchers, physicians and governments over many years. Shouldn’t ME patients and advocates apply the same degree of scientific and statistical rigour to their message that they expect from those on the other side of the argument? In my opinion, only then will we earn respect from those we are asking to support the cause.
With the 1st Canadian Collaborative Team Conference taking place in Montreal later this week, what better time than “right now” to be honest about what we know, or more accurately don’t know, regarding illness prevalence in Canada?