I haven’t seen the data, but I would think Canadians would be similar in that regard to Americans. But Canadian health care is so much inferior to much of Europe, not to mention the US, that it is unlikely to be an important confounding factor.

The statistical arguments against the quality of health care in the US almost without exception deliberately avoid using ACTUAL measures of health care quality, even when such data are available. They don’t even attempt to control for obvious strong confounders like genetic predispositions. There is nothing wrong with the OECD computing life expectancies for various countries. However, it is extraordinarily unprofessional and ideological for them to then claim that it is even an attempted measure of health care quality.

If you want to determine the relative quality of US health care, then I recommend you look through the medical literature for treatment outcomes. Such data are not easy to find in a form to compare across national boundaries, and there is no single measure of quality, but you quickly accumulate an impression that from premature birth survival rates, to treated cancer survival, to speed of diagnosis and treatment of morbid conditions, to heart disease, that the quality of health care in the US is incomparable.

Health care is a relatively small (but much valued) contributor to health, so measures of health as proxies to health care, are sophistic devices.

What makes you think that this is true?

“Murder is a form of criminal homicide; other forms of homicide might not constitute criminal acts. These homicides are regarded as justified or excusable. … The intent of the killer usually determines whether a criminal homicide is classified as murder or Manslaughter and at what degree.
…Modern statutes generally divide criminal homicide into two broad categories: murder and manslaughter. Murder is usually further divided into the first degree, which typically involves a premeditated intent to kill, and the second degree, which typically does not involve a premeditated intent to kill. Manslaughter typically involves an unintentional killing that resulted from a person’s criminal negligence or reckless disregard for human life.”