TABLE 1

Traditional Versus Alternative Measurements of Hospital Inpatient Activity Over 1 Year

Desired InformationTraditional MeasureAlternative/Additional Measures
Inpatient occupancy (%) based on censusMidnight occupancy: 85% (annualized)Peak daily occupancy: 89% (annualized)
LOS*Average LOS: 5.50 dMedian LOS: 2.29 d
Percent patients with LOS: 13% ≤24 h, 20% ≤27 h,  43% ≤2 d, 61% ≤3 d, 76% ≤5 d, 84% ≤7 d
Variability in number of admissionsNot traditionally reportedCV: 8.1% by month
CV: 23.7% by day of week
CV: 6.3% by weekday
Activity of the hospitalPatient-days (annual total): 130 088Patient-days generated by day of admission
Weekdays only (mean ± SD): 7226 ± 441 d
Weekdays only (mean ± SD): 6429 ± 1410 d
Variability in activityNot traditionally reportedWeekdays only:
All admissions CV: 6.3%
Emergent CV: 10.3%
Elective CV: 5.2%
Weekdays + weekends:
All admissions CV: 21.9%
Emergent CV: 9.6%
Elective CV: 67.6%
  • * For these calculations, LOS is calculated with exact admission and discharge times, not intervals of days.