There have been at least seven peer-reviewed studies which look at the question of lockdowns from a data point of view, and all of them come to the same basic conclusion: lockdowns do not have a statistically significant relationship with Covid cases or deaths. Here is a list of them with a key quote for ease of reference.
- “Comparing weekly mortality in 24 European countries, the findings in this paper suggest that more severe lockdown policies have not been associated with lower mortality. In other words, the lockdowns have not worked as intended.” “Did Lockdown Work? An Economist’s Cross-Country Comparison” by Christian Bjørnskov. CESifo Economic Studies March 29th, 2021.
- “Stringency of the measures settled to fight pandemia, including lockdown, did not appear to be linked with death rate.” “Covid-19 Mortality: A Matter of Vulnerability Among Nations Facing Limited Margins of Adaptation” by Quentin De Larochelambert, Andy Marc, Juliana Antero, Eric Le Bourg, and Jean-François Toussaint. Frontiers in Public Health, November 19th, 2020.
- “Lockdowns do not reduce COVID-19 deaths.” “Government mandated lockdowns do not reduce Covid-19 deaths: implications for evaluating the stringent New Zealand response” by John Gibson. New Zealand Economic Papers, August 25th, 2020.
- “While small benefits cannot be excluded, we do not find significant benefits on case growth of more restrictive NPIs.” “Assessing Mandatory Stay‐at‐Home and Business Closure Effects on the Spread of COVID‐19” by Eran Bendavid, Christopher Oh, Jay Bhattacharya, John P.A. Ioannidis. European Journal of Clinical Investigation, January 5th, 2021.
- “Previous studies have claimed that shelter-in-place orders saved thousands of lives, but we reassess these analyses and show that they are not reliable. We find that shelter-in-place orders had no detectable health benefits, only modest effects on behaviour, and small but adverse effects on the economy.” “Evaluating the effects of shelter-in-place policies during the COVID-19 pandemic” by Christopher R. Berry, Anthony Fowler, Tamara Glazer, Samantha Handel-Meyer, and Alec MacMillen, Proceedings of the National Academy of Science of the USA, April 13th, 2021.
- “We were not able to explain the variation of deaths per million in different regions in the world by social isolation, herein analysed as differences in staying at home, compared to baseline. In the restrictive and global comparisons, only 3% and 1.6% of the comparisons were significantly different, respectively.” “Stay-at-home policy is a case of exception fallacy: an internet-based ecological study,” by R. F. Savaris, G. Pumi, J. Dalzochio & R. Kunst. Scientific Reports (Nature), March 5th, 2021.
- “Full lockdowns and wide-spread COVID-19 testing were not associated with reductions in the number of critical cases or overall mortality.” “A country level analysis measuring the impact of government actions, country preparedness and socioeconomic factors on COVID-19 mortality and related health outcomes” by Rabail Chaudhry, George Dranitsaris, Talha Mubashir, Justyna Bartoszko, Sheila Riazi. EClinicalMedicine (The Lancet) 25 (2020) 100464, July 21st, 2020.