Having read the NPR piece it's pretty obvious that the US has less outcomes because the wealthy control our politics to such a great extent. We cannot take measures to increase public health that might reduce the profits of one industry or another; gun regulations are a fantastic example: the country is flooded with arms and that has obvious consequences but the gun industry has effective propaganda that millions of people either don't consider our gun deaths a problem at all or think it's a fair price to pay for some lunatic idea of freedom. We don't apply the precautionary principle to public health policy, instead we apply the "the rich should be able to make money off of this unless somone can prove beyond all reasonable doubt that it is harmful" principle. This is true across the board, from food and drugs to clean air and water regulations, to transportation - basically any policy area that impinges on human health.
Add to this the criminalization of reproductive healthcare in large swathes of the country and it's clear the problem is likely to get a lot worse in the near future.