About that Cochrane review on face masks

Of course the Right wing commentariat was always going to leap on the recent Cochrane review that said they their meta analysis indicated that it seemed masking during respiratory pandemics didn't have significant effect, even though it ended on this note:

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. There were additional RCTs during the pandemic related to physical interventions but a relative paucity given the importance of the question of masking and its relative effectiveness and the concomitant measures of mask adherence which would be highly relevant to the measurement of effectiveness, especially in the elderly and in young children.

There is uncertainty about the effects of face masks. The low to moderate certainty of evidence means our confidence in the effect estimate is limited, and that the true effect may be different from the observed estimate of the effect. The pooled results of RCTs did not show a clear reduction in respiratory viral infection with the use of medical/surgical masks.

My gut reaction was always that the whole approach of Cochrane was dubious, and would pretty much invite misrepresentation of a complicated issue, and I see now that some people at the Conversation have given a detailed explanation of the problems with the review.   I count this as "gut reaction: vindicated".