1. Matching on the estimated propensity score;Abadie;Econometrica,2016
2. Agrawal, V., Cantor, J.H., Sood, N. & Whaley, C.M. The impact of the covid-19 vaccine distribution on mental health outcomes. No. w29593. National Bureau of Economic Research, 2021.
3. The local and global mental health effects of the Covid-19 pandemic;Akay;Econ. Hum. Biol.,2022
4. An introduction to propensity score methods for reducing the effects of confounding in observational studies;Austin,2011
5. The impact of coronavirus disease 2019 (COVID-19) on healthcare-associated infections;Baker,2021