Data collection and processing
All data were collected from the hospital’s proprietary database and the hospital’s cardiology database and entered into an Excel file (Redmond, WA, USA: Microsoft). Data collected included demographic variables (e.g. age, sex), past medical history, chief complaint, date of TEE performance, clinical details of the TEE, date of electrical cardioversion, complications post-cardioversion, and re-admissions within 30 days of hospital discharge. Categorical variables were compared using the Chi-square or Fisher’s exact test where appropriate with a p<0.05 considered statistically significant. Continuous variables are described with mean and standard deviation and compared by the Student’s t-test where appropriate. The p-values for this are two-tailed, and p<0.05 is considered statistically significant.