id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iassist-553		iassist-553		11	.pdf	application/pdf	3493	143	63	We include here three maps to illustrate each geographic unit we are able to present: the health area and census tract maps have a split screen to show changes in variables through time. Though we cannot look at areas within a county, the PUMS file uses individuals as its cases, so we can define specific characteristics of a population and make comparisons through crosstabulations without fear of confusing people with census tracts.	cache/iassist-553.pdf	txt/iassist-553.txt