On Tuesday, February 7, 2023 at 12:31:07 AM UTC-5, pH wrote:
> On 2023-02-07, Frank Krygowski <
frkr...@sbcglobal.net> wrote:
> >
> > I'd be more interested in actual professional journal articles, instead
> > of right-leaning editorials. Those actual journal articles are among the
> > things my medical professional friends pay attention to.
> >
I do. Cochrane studies are aggregations of other studies. The hope is more or less that
by collecting data from a wide range of studies, the overall results may overcome the various
weaknesses of individual studies. I'm a bit skeptical of the fundamental idea, in part because
I'm aware of Cochrane studies whose authors aggregated studies they agreed with, but
rejected studies they didn't agree with. The sampling of studies itself was biased. Selection
criteria for studies are always stated, but it's possible to deliberately obscure bias. And even
without deliberate bias, it's possible for a couple of badly done studies to "outvote" a well done study.
In this case, it's noteworthy that the authors of the study stated "The high risk of bias in the trials,
variation in outcome measurement, and relatively low adherence with the interventions during the
studies hampers drawing firm conclusions" and later "The observed lack of effect of mask wearing
in interrupting the spread of influenza‐like illness (ILI) or influenza/COVID‐19 in our review has many
potential reasons, including: poor study design; insufficiently powered studies arising from low viral
circulation in some studies; lower adherence with mask wearing, especially amongst children... [etc.]"
I don't doubt that if few people wear masks, masking will seem ineffective.
And to state my position: I'm not one who believes masks are magic. I did use them when and where
I was asked to. (I think a retail outlet has the right to ask that, just as they ask for shirts and shoes to
be worn.) And I have been in situations where more careful people did wear them, yet I did not. To me,
it's yet again a question of benefits vs. detriments. The benefits may have been smaller than hoped
(and that's not yet clear) but the personal detriments were very close to zero.
Sorry, that's a fact-free rant.
- Frank Krygowski