A randomized trial of nighttime physician staffing in an intensive care unit
Kerlin 2013 trial design and results
Design
Randomised controlled trial
Treatment
In-hospital intensivist present overnight
Control
Intensivist available by telephone overnight
Population
1598 patients in an academic medical intensive care unit
Follow-up
Hospital discharge
Primary endpoint
ICU length of stay
Result
Patients admitted on intervention days were exposed to nighttime intensivists on a median 100% of nights versus 0% on control days (p<0.001). Despite that, nighttime intensivist staffing did not significantly affect ICU length of stay (median 52.7 hours overall), ICU mortality (18% overall) or any other outcome. Median APACHE III score was 67.
Secondary endpoints
ICU and in-hospital mortality, readmission, discharge disposition
In an academic medical ICU in the United States, nighttime in-hospital intensivist staffing did not improve patient outcomes.
The trial authors, in the published abstract
How it has aged
Expensive, widely assumed to be beneficial, and randomised only once. The setting matters: an academic unit with resident cover overnight already had experienced clinicians present, so the marginal value of the consultant was small.
Publications
A randomized trial of nighttime physician staffing in an intensive care unit
Kerlin MP, Small DS, Cooney E, et al. A randomized trial of nighttime physician staffing in an intensive care unit. N Engl J Med 2013 Jun 6;368(23):2201-9.
No improvement in ICU length of stay or mortality
Conducted in an academic unit with existing overnight resident cover