The error bars here show 95% confidence intervals for the rates. Although a gradient by income was still present in 1996, only the rate for the poorest quintile was significantly higher than the others.

Note that infant mortality for the poorest neighbourhoods of urban Canada was considerably below the national rate for the United States (7.8 per thousand).

Nevertheless, the rate for Canada's richest neighbourhoods was no lower than the national rate for Sweden (4.0).