Fig. 2

Displays the Kaplan-Meier survival curves for CABG surgeries conducted at daytime (Nighttime_CABG = 0) and at night (Nighttime_CABG = 1). The plot depicts the decline in survival probability over time for both groups. The 95% confidence intervals are shaded in blue and red, respectively. The curves suggest similar survival probabilities for both groups across the observed time periods. The table details the number of patients remaining at risk at specified time intervals (0, 500, 1000, 1500, 2000 days) for surgeries performed during both daytime and nighttime