Table 2.
Characteristics of the ICUs According to the Presence or Absence of Nighttime Intensivists.
| Characteristic | Nighttime Intensivists | No Nighttime Intensivists | P Value |
|---|---|---|---|
| High-intensity daytime staffing | |||
| Annualized ICU admissions — no. | 0.24 | ||
| Median | 517 | 770 | |
| Interquartile range | 418–603 | 514–979 | |
| ICU type— no./total no. (%) | >0.99 | ||
| Mixed | 3/6 (50) | 11/21 (52) | |
| Specialty | 3/6 (50) | 10/21 (48) | |
| Full-time physician ICU director — no./total no. (%) | 2/6 (33) | 20/21 (95) | <0.01 |
| Routine participation of medical students, residents, or other physician trainees — no./total no. (%) | 5/6 (83) | 21/21 (100) | 0.22 |
| Daily multidisciplinary rounds — no./total no. (%) | 6/6 (100) | 17/21 (81) | 0.55 |
| Low-intensity daytime staffing | |||
| Annualized ICU admissions — no. | 0.10 | ||
| Median | 1377 | 815 | |
| Interquartile range | 741–1735 | 368–1198 | |
| ICU type — no./total no. (%) | >0.99 | ||
| Mixed | 4/6 (67) | 9/16 (56) | |
| Specialty | 2/6 (33) | 7/16 (44) | |
| Full-time physician ICU director — no./total no. (%) | 6/6 (100) | 15/16 (94) | >0.99 |
| Routine participation of medical students, residents, or other physician trainees — no./total no. (%) | 3/6 (50) | 10/16 (62) | 0.66 |
| Daily multidisciplinary rounds — no./total no. (%) | 6/6 (100) | 15/16 (94) | >0.99 |