Wealsocomparedcoverageamongthissubsettocoverageforthe entire population under age sixty-five. The uninsured population (under age sixty-five) appeared to decline by three percentage points from the 1987survey to the 1988 survey, although a variety of other indicators suggest that coverage rates actually changed little between1986and1987.Wesubtractedthreepercentagepointsfrom the whole-population coverage estimates from the pre-1988 surveys to account for question-wording changes. No adjustment was needed for our subset of workers because question-wording changeshad minimaleffects on their coverage estimates.