Fig. 4

Kaplan-Meier Survival estimate comparing 14-day mortality before and during the COVID-19 pandemic. Kaplan–Meier curves illustrating 14-day survival probabilities for patients admitted in 2019 (red line) versus 2020 (teal line). The shaded regions around each line denote 95% confidence intervals for the survival estimates. The x‐axis shows days since admission, and the y‐axis indicates the estimated probability of survival. The tables below the x‐axis list the number of patients “at risk” (still alive and under observation) and the cumulative number of deaths (“events”) for each group at the indicated time points. The p‐value (> 0.9) reflects a log‐rank test indicating no statistically significant difference between the two survival curves