Table 1.

Reduction in hospitalizations due to HF during COVID-19 pandemic period, compared with same period in the previous year or a different period in the same year (before COVID-19).

Study (year)	Number of patients	Country	Study and control periods	Reduction in HF hospitalizations
Bromage et al. (9)	104	England and Wales	2 March−19 April 2020 vs. control period in 2020 (pre-COVID) and the same periods in 2017–2019	−66%, p < 0.01
Cox et al. (10)	–	Vanderbilt University Medical Center, Nashville, Tennessee	22 March−20 April 2020 vs. same period in 2019	−62 ± 7%, p < 0.01
Hall et al. (11)	–	USA	Mean weekly hospitalization from January 2020 to 11 April. The significant and progressive decline described in 2020 was not observed in 2019, excluding potential confounding based on seasonal trends.	−50% (after the first case of COVID-19)
Cannatà et al. (12)	1,372	South London	7 January−14 June 2020 vs. same period in 2019	−40%, p < 0.001
Konig et al. (13)	13,484	Germany	13 March−21 May 2020 vs. control periods in 2020 (1 January−12 March) and 2019 (13 March−21 May)	−30%, p < 0.01

COVID-19, Coronavirus Disease 2019; HF, heart failure.