Table 4

Relative risk of incident heart failure or death, as a combined outcome, within 90 days of follow-up from admission to hospital for new onset myocarditis in individuals aged 12-39 years, with no predisposing comorbidities, and with myocarditis associated with SARS-CoV-2 mRNA vaccination, myocarditis associated with covid-19 disease, or conventional myocarditis

Type of myocarditisDiagnosis of heart failure or death (No of patients)Total No of individualsRelative risk (95% CI) of diagnosis of heart failure or death
Vaccination63260.50 (0.22 to 1.12)
Covid-195472.87 (1.23 to 6.70)
Conventional11430771 (ref.)
  • CI=confidence interval.