3 ms·
The OP does have a point. You cannot control for the social isolation factor because there is no data on it. The people who isolate with 100% success never get
by gridlockd 6y ago
The OP does have a point. You cannot control for the social isolation factor because there is no data on it.
The people who isolate with 100% success never get COVID and thus are missing from the sample population.
It is also easier to isolate than to give up smoking.