Skip to main content

Table 1 Calculations to estimate cost ^

From: The cost of hospital-acquired complications for older people with and without dementia; a retrospective cohort study

Patient DRG

Data source

Fractured neck of femur, +c/c

Fixed costs (estimated)

State data

$670

Variable costs (estimated)

State data

$6,570

Average length of stay for the DRG

State data

8 days

Daily variable cost

State data

$6,570/8 = $820

Actual length of stay

Study data

11 days

Actual estimated cost

Study data * State data

11 * $820 + $670 = $9690

If patient length of stay is above the average for the DRG:

Extra length of stay

Study data – State data

11 - 8 = 3 days

Extra cost

Study data * State data

3 * $820 = $2460

  1. ^Example uses Fractured Neck of Femur with complication and/or comorbidity (+c/c) (DRG I78A), figures rounded to reflect estimation status.
  2. DRG = Diagnostic Related Group.
  3. State data = all ages overnight NSW public hospital episodes.
  4. Study data = 50+ overnight NSW public hospital episodes.