If you have ever sat in a Melbourne ED at 11 pm wondering when you might be called, you're not alone. The Australian Institute of Health and Welfare publishes consistent state-level data every year, and the gap between best and worst is wider than most people realise.
How ED wait times are measured
Every Australian ED uses the Australian Triage Scale (ATS) with five categories:
- Category 1 — immediately life-threatening. Target: seen straight away. 100% target.
- Category 2 — imminently life-threatening. Target: 10 minutes. 80% target.
- Category 3 — potentially life-threatening. Target: 30 minutes. 75% target.
- Category 4 — potentially serious. Target: 60 minutes. 70% target.
- Category 5 — less urgent. Target: 120 minutes. 70% target.
When we talk about "wait times," we usually mean the percentage of patients seen within those targets ("seen on time") and the median time from arrival to first doctor contact.
State-by-state comparison
The most recent AIHW reporting shows clear differences between states:
| State | Median wait | Seen on time | Comment |
|---|---|---|---|
| NSW | 14 min | 77% | Strongest performer; meets target nationally |
| QLD | ~18 min | 68% | Near national average |
| VIC | ~19 min | ~62% | Metropolitan EDs under sustained pressure |
| WA | ~17 min | ~65% | Variable by hospital; Perth metro tightest |
| SA | ~22 min | ~58% | Below national average in recent reporting |
| TAS / ACT / NT | Variable | Variable | Smaller systems, higher year-on-year variance |
The headline number ("median wait of 18 minutes") hides the real story: median is dragged up by the long tail. The ATS Cat 4 or 5 patient who arrives at 11 pm on a Friday in winter is rarely seen at the median — they're seen at the 75th or 90th percentile, which is often four to eight hours.
Box Hill and Austin — the eastern Melbourne reality
For eastern-suburbs residents, the two largest public EDs are Box Hill Hospital and Austin Hospital. Both are tertiary facilities with full emergency and inpatient capability. Both are also among the busiest EDs in the state. Average winter overnight waits for Cat 4 and 5 are commonly in the 3–6 hour range, with peaks of 8+ hours during influenza season or COVID surges.
Real-time wait dashboards
Most state health departments now publish live ED wait times. You can check before you leave home:
- NSW — emergencywait.health.nsw.gov.au
- Victoria — VAHI dashboard (vahi.vic.gov.au); some hospitals also publish live counts
- Queensland — qld.gov.au/emergencydepartmentwaittimes
- Western Australia — emergencyaccess.health.wa.gov.au
- Doccy.com.au aggregates several states into one view
What drives the differences?
Three factors explain almost all the variation between states:
- Staffing. Number of FACEMs and emergency nurses per shift, plus the availability of overflow capacity.
- Bed flow. ED waits are usually a downstream symptom of bed-block — patients ready to leave ED can't go upstairs because the ward is full, which means the next ED bed isn't free.
- Social care discharge. Patients medically fit to leave hospital who can't be discharged (because aged-care placements, NDIS supports or home services are unavailable) occupy beds the ED would otherwise use.
When wait matters and when it doesn't
If you have any red-flag symptom — chest pain, stroke signs, severe bleeding, anaphylaxis — go to ED immediately regardless of the dashboard. You will be seen first. The wait times above describe what Cat 4 and 5 patients experience; Cat 1, 2 and 3 patients are seen ahead of the queue, correctly. Our urgent care vs ED guide walks through the decision in detail.