Statistical Analysis
Unpaired two-sided t-tests and Fisher’s Exact tests were performed for continuous and categorical variables, respectively. Survivorship between patients undergoing FEES was compared to the control group using the Kaplan-Meier method and the log-rank test. Patients were censored at date of death or most recent follow-up as appropriate. All statistical analyses were performed using R Software (version 3.6.3; R Core Team, Vienna, Austria) with a defined α = 0.05.23