Interesting graph Alvez, however the stringency model used is incomplete. I say this because if you look at, for example New Zealand, which has a lockdown Stringency of 22.22 and the UK which has a stringency of 75 it would suggest, absolutely that lockdown had no impact, in fact, you could conclude that lockdown makes things worse. So I ask myself why that might be.
Firstly, I would assume stringency changes over time, the figures I quoted are from the 5th of this month. This means that dependent on when you measure stringency, the results would, perhaps highlight something completely different. What if stringency was plotted over time against DPM over time, what would that show?
Secondly, define stringency? I looked at the Blavatnik School of Government and it seemed a bit mixed up to me, it didn't really define how stringency is calculated short of saying severity of lockdown measures. For example how many stringency points do you get for closing borders, how many for having open borders with 14 days quarantine. I would want to see how stringency is actually measured before commenting on the graph.
I am not discounting the study, I am saying that I don't know how to interpret the data, it seems a little loose, or dare I say it presented to suite an agenda?
I don't know.