Good yer getting healthy - on the charts - that's all from one private organization that looks like a shill for nationalized healthcare...if that's your thing. And the charts are a little bent to that end. For example, "difficulty getting care" at odd hours, that isn't "ER". When you consider that most in-and-out 24-hour general clinics like MedExpress etc, and they are everywhere in the US (like fast food restaurants), generally charge at ER rates (other rates for routine medical care, like flu shots, common exams etc), then you are excluding the vast majority of immediately accessible care in the US - it's an apple to oranges comparison with other systems that are arranged differently. Those are insurance based, but do not deny care to anyone with an urgent condition. If more than care up to minor surgery is needed, those clinics refer you to their affiliate hospital, where you are typically inprocessed through an emergency room, which can be expensive. You can easily argue that this process is expensive, depending on the situation, but there isn't any difficulty getting quick care at odd hours in the US, unless you don't live near civilization.
I could go on an on, but that's a start
