What if someone were to tabulate the number of MEANINGFUL studies for CFS? That might be biological studies not involved with psychological or behavioral interventions or theories. Also, should only include studies that tell us something useful towards diagnosis and treatment. That might be illuminating, the 'several thousand' studies might reduce to a few hundred that are actually useful to patients and clinicians.
That would be interesting.
However, my point was that there aren't 4000/5000 studies of whatever quality showing abnormalities. If one puts "chronic fatigue syndrome" into PubMed, one gets 4387 results at this moment in time.
However, there aren't 4387 different studies involving CFS patients.
- A percentage are papers on other topics where CFS just gets a mention somewhere (i.e. exercise has been work in CFS also or whatever claim they want to make)
- A percentage are review papers - collating the data out there.
- Hypothesis papers - maybe a bit like review papers - putting a theory together referencing pre-existing CFS research and research from other areas.
- A percentage are editorials - a bit like review papers
- Then there are letters to the editors (just talking about the type that don't have new data - they're replying to other papers - there can be some letters to the editor that do include new data).
-
-----
Then if one is looking at the claim that there are 4000/5000 or whatever papers that have shown biological abnormalities, one shouldn't count "paper"/nonbiomedical research - often used in epidemiology, for example. Also an awful lot of psychological and psychiatric research is paper research including some intervention studies (no biological outcome measures).
----
There may be other exclusions that aren't occuring to me off the top of my head.
I don't know what the figure one is left with then.