Figure 1 illustrates the history of the SARS-CoV-2 pandemic in Romania from February 26 until April 20, including dates, number of fatalities and number of the missing subjects due to incomplete information. The Romanian COVID-19 mortality study has a sample size of 432 patients with complete data regarding gender, age and comorbidities. It consists of a multi-case, multi-center approach focused on the mortality frequency and of a case-case evaluation with the aim of comparing hospital-pneumonia and COVID-19 mortality (see the section on the study design for the details). Our goal is to investigate the association between the mortality and comorbidities, gender, age and hospital-pneumonia based on the statistical methods presented in detail in the last section of the present article. Since the Romanian population mainly consists of 84.1% Ethnic Romanians and of a small Hungarian minority that makes up 5.4% of the population demographics that both belong to the white ethnicity, an effect of the ethnicity was not considered in this article17.
Figure 1 History of SARS-COV-2 pandemic in Romania up to April 20.