Using Quality Control Charts for Monitoring COVID-19 Daily Cases and Deaths in Türkiye

Abstract

The national partial curfews in Turkey, announced after normal time period in 2020’s summer, began on 18.11.2020. In this study, for the periods between 25.11.2020-31.05.2022, the daily new cases and for the periods between 27.03.2020-31.05.2022 deaths and fatality rates are monitored. In this research, Run charts, control charts of c and p are used for monitoring the COVID-19 process in Turkey. In the periods of national extended curfews (December 1, 2020–February 28, 2021), full lockdown (April 29–May 16, 2021) and gradual normalization (May 17– May 31, 2021) the number of daily cases and deaths show downward trend as it is expected. However, in the periods of local decision-making phase (March 1–29, 2021) and revised local decision-making phase (March 30–April 13, 2021) the number of new daily cases and deaths show upward trend. For the latest period between June 1, 2021-May 31, 2022, in winter season the number of deaths and daily cases increasing as it is expected then in spring season they decrease. The daily new cases and deaths due to COVID-19 monitored rapidly and effectively by control charts. It is obvious that some of the public did not internalize the negative impacts of the virus in 2020 and consequently disregarded health guidelines in 2021.