I’ve actually done analyses with OECD data. It’s terrible. This is about as good as it gets. Countries don’t report these data points very reliably. You get some that are a decade old, some that are much newer.
The real bias is in the use of “non-emergency surgery” as a data point. Look at time to see a specialist and you’ll get a much different picture. (edit: spoiler alert, the US sucks. ask me about healthcare scheduling if you want me to nerd out for a bit)