EEDI Descriptive Data:

Results for Waikato DHB

Waikato DHB

Population/socio-demographic characteristics (all ED events data).

  • Year
    • ED events per year have increased over time for both Māori (11.2% to 20.5%, 2006-2012) and non-Māori (11.4% to 19.9%).

  • Gender
    • The gender profile associated with all ED events was similar for Māori (49.7% males and 50.3% females) and non-Māori (51.5% males and 48.5% females).
  • Age
    • A higher proportion of Māori ED events were seen in the younger age groups, compared to non-Māori, particularly those aged 0-4 years (16.9% versus 8.8%) and 15-24 years (19.2% versus 14.8%). In comparison, a higher proportion of non-Māori ED events were seen in the older age groups, particularly those aged 65-74 years (10.1% versus 5.7%) and those aged ≥75 (16.4% versus 3.2%).

  • NZDep06
    • 67.8% of all Māori ED events were from the 3 most deprived deciles compared to 43.9% of non-Māori ED events.
    • The highest proportion of ED events for Māori were from decile 10 (32.0%) and the highest proportion of non-Māori ED events were from decile 7 (15.2%).
    • The lowest proportion of ED events for Māori were from decile 1 (1.0%) and the lowest proportion of ED events for non-Māori were from decile 3 (4.0%).

Characteristics of presentation (all ED events data).

  • Arrival mode
    • 42.8% of Māori ED events arrived via self-presentation compared to 37.2% of non-Māori ED events.
    • Non-Māori had a higher proportion of arrival into ED via ambulance, helicopter and police compared to Māori (19.5% versus 14.3%).
  • Referral type
    • 9.8% of Māori ED events were referred via a general practitioner compared to 13.4% of non-Māori.
    • 2.3% of Māori ED events were via hospital transfer compared to 1.9% of non-Māori.
    • Māori ED events had a higher proportion of self-referral compared to non-Māori (48.0% versus 43.1%).
  • Triage category
    • 0.5% of both Māori and non-Māori ED events were triaged to be seen immediately.
    • A slightly higher proportion of non-Māori ED events were triaged to be seen within a shorter timeframe compared to Māori. i.e. 10 minutes (11.3% versus 9.6%) and 30 minutes (39.8% versus 36.5%).
    • A higher proportion of Māori ED events were triaged to be seen within a longer timeframe compared to non-Māori. i.e. 60 minutes (38.2% versus 36.4%) and 120 minutes (15.2% versus 12.0%).

Predictors/markers of care (First ED events data, average/mean).

  • The average ED arrival to assessment time for Māori patients was 77 mins compared to 76 mins for non-Māori.
  • The ED LOS (Length of Stay) for Māori patients was 205 mins compared to 220 mins for non-Māori.
  • The ward LOS for Māori patients was 89 hours compared to 103 hours for non-Māori.
  • 17% of Māori patients encountered access block compared to 19% of non-Māori.
  • 0.4% of Māori patients died in ED or within 10 days of ED discharge compared to 0.7% of non-Māori patients.
  • 9% of Māori patients re-presented at ED within 72 hours of ED/ward discharge compared to 8% of non-Māori.
  • 3% of both Māori and non-Māori patients had a hospital readmission within 72 hours of ED/ward discharge.

Regression models (First ED events data).

After controlling for year, gender, age at presentation, triage category, NZDep decile, and M3 Index score:

  • The odds of access block for Māori patients is 1.2 times the odds of access block for non-Māori patients.
  • The odds of ED re-presentation within 72 hours of ED/ward discharge for Māori patients is 1.0 times the odds of re-presentation for non-Māori patients.
  • The odds of hospital readmission within 72 hours of ED/ward discharge for Māori patients is 1.0 times the odds of readmission for non-Māori patients.
  • The odds of death for Māori patients in ED or within 10 days of ED discharge is 1.5 times the odds of death for non-Māori patients.