The New York Times and Dave Leonhardt's Upshot section made a big splash a few days ago by reporting on a study showing that the Canadian middle class had caught the US middle class in median income and likely surpassed it since. The study is based on an effort to measure median income per capita after taxes, and its results are presented as something truly significant.
However, I think the study is biased in that in median income per capita after taxes, it selected the wrong measure. What is needed is a measure of income or affluence that takes account of the value of cross-national variations in Government benefits delivered to the middle classes. Since the United States has lower taxes than most comparable nations, but delivers much less in safety net and entitlement benefits, it's pretty clear that the measure used in the study reported on by The Times overestimates the real median income of the US middle class in comparison with the middle classes of other comparable nations and provides a misleading impression of the relative affluence of the American middle class. Read more about Did Canada's Middle Class Just Get More Affluent Than the US's, or Did that Happen Long Ago?
We keep hearing bad news about where the US stands on various social and economic indicators. The US's ranking in math capability is 27th in the world. Our health care system is ranked 37th. Our 2011 life expectancy is 51st in the world. Our estimated 2012 infant mortality rate is 49th in the world. So we're pretty far down in a number of international statistical comparisons of performance. Some here point to better performance on economic indicators. For example, GDP per capita is often cited as an area where the US performs much better. But even here the latest CIA world handbook estimate shows the US ranked 19th on this measure at $48,400. Read more about We're No. 24! We're No. 24!