EEDI Descriptive Data:

Results for Waitematā DHB

Descriptive variables: Nationwide
Descriptive & Outcome Variables: By DHB
Outcome Variables: Nationwide

Waitematā DHB

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

  • Year

    • ED events per year have increased over time for both Māori (11.4% to 19.4%, 2006-2012) and non-Māori (12.4% to 17.2%).

  • Gender
    • The gender profile associated with all ED events was similar for Māori (47.5% males and 52.5% females) and non-Māori (48.2% males and 51.8% 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 (16.1% versus 8.2%) and 15-24 years (21.7% versus 13.7%). In comparison, a higher proportion of non-Māori ED events were seen in the older age groups, particularly in the 65-74 age group (9.8% versus 4.5%) and those aged ≥75 (17.6% versus 2.9%).

  • NZDep06
    • 43.3% of all Māori ED events were from the 3 most deprived deciles compared to 23.5% of non-Māori ED events.
    • The highest proportion of Māori and non-Māori ED events were from decile 7 (22.9% versus 14.7%).
    • The lowest proportion of Māori ED events were from decile 1 (1.9%) and the lowest proportion of non-Māori ED events were from decile 10 (3.3%).

Characteristics of presentation (all ED events data).

  • Arrival mode
    • 87.2% of Māori ED events arrived via self-presentation compared to 81.0% of non-Māori ED events.
    • Non-Māori had a higher proportion of arrival into ED via ambulance, police and helicopter compared to Māori (19.0% versus 12.8%).
  • Referral type
    • 3.9% of Māori ED events were referred via a general practitioner compared to 6.9% of non-Māori ED events.
    • 4.2% of Māori ED events were via hospital transfer compared to 3.4% of non-Māori ED events.
    • Māori ED events had a higher proportion of self-referral compared to non-Māori (81.7% versus 76.3%).
  • Triage category
    • 0.3% of both Māori and non-Māori ED events were triaged to be seen immediately.
    • 7.3% of Māori ED events were triaged to be seen within 10 minutes compared to 9.3% of non-Māori ED events.
    • A higher proportion of non-Māori ED events were triaged to be seen within 30 minutes compared to non-Māori (47.1% versus 42.7%).
    • A higher proportion of Māori ED events were triaged to be seen within a longer timeframe compared to non-Māori. i.e. 60 minutes (41.7% versus 36.8%) and 120 minutes (8.1% versus 6.5%).

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

  • The average ED arrival to assessment time for Māori patients was 71 mins compared to 72 mins for non-Māori.
  • The ED LOS (Length of Stay) for Māori patients was 312 mins compared to 382 mins for non-Māori.
  • The ward LOS for Māori patients was 78 hours compared to 106 hours for non-Māori.
  • 34% of Māori patients encountered access block compared to 43% of non-Māori.
  • 0.2% of Māori patients died in ED or within 10 days of ED discharge compared to 0.6% of non-Māori patients.
  • 8% of Māori patients re-presented at ED within 72 hours of ED/ward discharge compared to 7% of non-Māori.
  • 2% 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 0.9 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.

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