Professor of Economic History, Robert C. Allen, concludes in his study without the 1917 revolution is directly responsible for rapid growth that made the achievements listed above possilbe: https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.507.8966&rep=rep1&type=pdf
Study demonstrating the steady increase in quality of life during the Soviet period (including under Stalin). Includes the fact that Soviet life expectancy grew faster than any other nation recorded at the time:
A large study using world bank data analyzing the quality of life in Capitalist vs Socialist countries and finds overwhelmingly at similar levels of development with socialism bringing better quality of life:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1646771/pdf/amjph00269-0055.pdf
This study compared capitalist and socialist countries in measures of the physical quality of life (PQL), taking into account the level of economic development.
https://pubmed.ncbi.nlm.nih.gov/2430906/