Patients have increasing mortality risk the longer they are unable to be discharged from the PICU. Many patients are discharged from the PICU within the first week of PICU stay. Mortality point estimates with 95% confidence intervals for patients still requiring the PICU after 1 week are 17.4% (14.7–20.1), 20.5% (16.2–24.8), and 23.6% (17.0–30.3) for 1st, 2nd, and 3rd PICU admissions, respectively. Mortality estimates for patients still requiring the PICU after 2 weeks increase to 32.0% (26.8–37.2), 37.9% (30.1–45.8), and 47.8% (35.6–60.0) for 1st, 2nd, and 3rd PICU admissions, respectively. Mortality estimates for patients still requiring the PICU after 4 weeks increase to 45.0% (35.9–54.1), 54.6% (41.1–68.0), and 66.7% (50.3–83.1) for 1st, 2nd, and 3rd PICU admissions, respectively. These estimates pertain to each independent PICU admission, not to cumulative days in the PICU over the study interval.