From: Evidence-based prediction and prevention of cardiovascular morbidity in adults treated for cancer
Level | 1 | a | Systematic review of randomised controlled trials |
b | Single randomised controlled trial | ||
Level | 2 | a | Systematic review of cohort studies |
b | Individual cohort study | ||
c | “Outcomes” research | ||
Level | 3 | a | Systematic review of Case-Control studies |
b | Individual Case-Control study | ||
Level | 4 | Case-series | |
Level | 5 | Expert opinion |