Study describes Covid measures as effective

The headline to this CTV piece says Montreal study describes COVID-19 health measures as ‘generally effective’ but it’s worth noting that the researchers are a business professor and his protégé, not medical people. CBC also has a look at the study, underlining how the researchers were hoping to counter misinformation from social media.

The researchers looked at the non-medical actions people were taking in the year before a vaccine was available – masks, social distancing, school and business closures and limits on travel – and concluded that, statistically, they helped reduce the number of Covid cases, not just here but worldwide.

…Looking again at pieces about this study, I wonder what they used for a control sample.