Table 1.

Capacity-strain metrics, locations, and time intervals

Strain Metric	Measurement Location				Measurement Interval
	ICU	Ward	SDU	Emergency Department
Occupancy	Measured	Measured	Measured	Measured	Hourly
Census acuity	Measured	Not measured	Not measured	Not measured	Daily at 7 a.m.
Turnover	Measured	Not measured	Not measured	Not measured	Hourly
Discharges	Measured	Not measured	Not measured	Not measured	Hourly
Vasopressors	Measured	Measured	Measured	Measured	8-h windows (7 a.m. to 3 p.m., 3 p.m. to 11 p.m., 11 p.m. to 7 a.m.)
Mechanical ventilation	Measured	Measured	Measured	Measured
BiPAP	Measured	Measured	Measured	Measured
Other respiratory support*	Measured	Measured	Measured	Not measured

Definition of abbreviations: BiPAP = bilevel positive airway pressure; ICU = intensive care unit; SDU = step-down unit.

^*Composite of non-rebreather mask, high-flow nasal cannula, or fraction of inspired oxygen ≥ 60%.