[Scoundreller]

Everywhere and nowhere it can be 30 minutes. Every competent ER on the planet triages patients. Come in with crushing chest pains and it should be 30 minutes everywhere 99% of the time. Broken arm? You might wait hours if people keep coming in with crushing chest pains.

"Wait" can be defined very differently. Wait time to get triaged by a nurse? An ECG for chest pains? Initial physician assessment? Entry-to-exit? Lab results? Time to X-Ray if needed?

Lots of directives may be in place too. In an efficient system, the nurse is empowered to "order" many procedures that screen out serious things that require immediate physician intervention. Or just to save time like ordering an X-Ray first instead of waiting to see a doctor to order it and then waiting again for it to come back to review.