“…Studies included in the meta-analysis were published between 2020 -2022, and the countries included the USA, UK, Sweden, Singapore, Pakistan, Germany and China. Among those studies, eight reported IHCA outcomes between the prepandemic and COVID-19 pandemic periods (95,115 vs. 27,633 patients, respectively) [26,27,29,[32][33][34][35], and three studies during the COVID-19 period among SARS-CoV-2 positive vs. negative patients (6,225 vs. 20,401 patients, respectively) [28,30,34,36]. The baseline characteristics are described in Table 1.…”