(Hopefully, these studies meet your control/parameter standards.)
Here’s a comprehensive
Wall Street Journal study (4/26, behind capitalist paywall) looking at
relative death rates versus how quickly economies were shutdown in that New-York-minute due to COVID-19, using both European countries and US states.

I'm not a trained professional, but understand that the data has been massaged towards
apples-to-apples, and notice that there's a
bunch of anonymous brown dots (US states) down around, and well below, 50 dpm (dead-per-million), which translates to
one or less COVID-19 death per 20,000 citizens in the 21-days since rising above a threshold of one dpm. Now,
there's a creative can-do metric:
dead-per-million-per-gestation-period, starting that clock after a consistent dpm-threshold is reached.
So, how do you like
them apples, curated and delivered by
T..J. Biznessman..? Twas hoping resident stats-experts would have a go at the methodology, which can be viewed as a balanced normalization, by the untrained eye.
If I was a
billionaire and a betting man, I’d put up a couple of cool million on having T.J. either 1) debate or 2) cage-fight the good Dr. Fauci … the specific contest being established by a
coin flip (in case you were wondering about the
probability angle). Americans are owed this.
Outside of Mr. Rodger’s neighborhood,
today’s billionaires and administrators are so boring, shying away from rigorous debate and even cage-fighting.
Sad.
--------[ WAIT ... THERE'S MORE!!! ]-------
An interesting contrast arrives from
Down Under, where two Commonwealth island nations took
different approaches to the Coronavirus (4/29, WSJ paywall again). Excerpt:
New Zealand imposed one of the strictest lockdowns in the world, aiming to stamp out the new coronavirus. Australia took a different approach, adopting social-distancing restrictions but keeping more of its economy open, in an effort to suppress the pathogen.
This might be viewed as an excellent controlled experiment. Let’s take a look at the results to date:

New Zealand certainly
took this pandemic seriously, but have those severe costs impacted the results? Meanwhile, the
Land of Oz keeps focused on prudent measures and
asks sensible outrageous questions, all with
an eye on the future…
‘
Despite all our medical advances … the mortality rate has remained constant – one per person’ … some perspective from an Aussie doc (5/14). Indeed,
putting things in perspective (5/19, ratio-wise), compared to the total deaths in the world, heart disease accounts for 1-in-3 deaths, and cancer almost 1-in-6.
Coronavirus may have been a 'cell-culture experiment' gone wrong … a thoughtful “non-political” Australian scientist maintains that
this virus binds to human proteins more readily than to proteins in any other animal, which suggests that it was cultured in a lab, perhaps a hybrid developed from other viruses … kind of “
optimally designed to infect humans” (5/25), with no political bias.
RUCK ON, LADS ...
New Zealand kicks off its post-pandemic era with a weekend of rugby (6/12).
HOLD ON, LADS ... the appearance of a whopping
13 new COVID-19 cases in New Zealand has steeled Kiwi government’s reserve, which
will now be sending those poor folks to quarantine camps (8/13,
George Orwell could not be reach for comment). And over in the Aussie state of Victoria, with
11 nursing-home deaths as the reason,
their Premier mandates a total societal shutdown (8/22), as if that makes any sense.
--------[ WAIT ... THERE'S MORE!!! ]-------
On the other side of the world from
Down Under ... could it be that
anti-lockdown Sweden was right after all..? (7/10) Regardless, there are some solid applicable observations for understanding how the pandemic could wind down in the US, re: herd immunity, etc.
”
Sunt förnuft har rådit.” ... Sweden provides a good case study with their
alternative approach for dealing with a pandemic (7/25), despite a steady stream of criticism worldwide on their
anti-lockdown rationale.

No outbreak 'second-waves', when you have herd immunity..?
Additionally, not that
Krona counting should be a metric compared to Corona casualties,
Swedish companies are consistently beating European analysts’ expectations (7/29).
An in-depth
fatality-rate comparative study between Sweden and the hard-hit states of New York, Illinois and Texas suggests that “
lockdowns have not prevented any deaths from covid-19. At best, lockdowns have deferred death for a short time..”, or so maintains a doctor with the
Mises Institute (8/15), who concludes with:
Covid-19 is not going to be defeated; we will have to learn how to coexist with it. The only way we can learn how best to cope with covid-19 is to let individuals manage their own risk, observe the outcomes, and learn from mistakes. The world owes a great debt to Sweden for setting an example that the rest of us can follow. [Kind of late for that, but whatever ... maybe next time]

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