Background: Anxiety is widely prevalent, exhibiting higher rates among individuals with chronic health conditions, notably cardiovascular diseases such as atrial fibrillation (AF). Studies have shown interventions targeting anxiety can improve AF outcomes, while AF management can reduce anxiety levels. This study explores the association between AF and anxiety by comparing anxiety levels in AF populations with healthy controls. Materials and Methods: A systematic review adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) principles was conducted to identify relevant studies through medical databases and grey literature sources. Various psychometric tools, including the Spielberger State-Trait Anxiety Inventory (STAI) and Zung's Self-Rating Anxiety Scale (SAS) were considered for assessing anxiety severity. Meta-analysis was performed using a random-effects model to analyse continuous variables, with the overall effect size quantified as the standardized mean difference (SMD). Results: 5 study samples (327 AF patients for STAI-State, 171 AF patients for STAI-Trait) and 3 study samples (209 AF patients) using Zung's SAS were included in the meta-analysis, along with 3 respective control samples. Compared to control groups, AF patients exhibited significantly higher scores for STAI-State (SMD 1.13; CI: 0.57-1.69, p<0.01, I²=81%), STAI-Trait (SMD 0.54; CI: 0.09-0.99, p=0.02, I²=67%), and Zung's SAS (SMD 1.85; CI: 1.58-2.13, p<0.01, I²=22%). Conclusions: AF patients demonstrated elevated levels of anxiety, as indicated by higher STAI and Zung's SAS scores compared to controls. These findings suggest an association between AF and anxiety. The study highlights the importance of addressing mental health disorders in AF patients and vice versa.
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