Systematic Review and Meta-Analysis of the Association between β-Blocker Use and Survival in Ovarian Cancer Patients

1. Abstract
1.1. Objectives: β-blockers are drugs frequently prescribed for various indications in cardiology and for which anticancer properties have been suggested. We aimed to evaluate the association between the use of β-blockers and survival of women with OC.
1.2. Methods: A systematic literature search of relevant databases through September 2020 was conducted to identify studies assessing the association between β-blockers use and prognostic in women with OC. The inverse variance weighting method with random-effects model was used to calculate pooled hazard ratios (HR) and 95% confidence intervals (95% CI). We assessed the risk of immortal time bias (ITB) and the quality of the studies with the Newcastle–Ottawa scale. Subanalyses were performed based on quality scores and the risk for ITB.