[R-sig-Geo] source of Bivand reference to 1986 Medicaid data
Roger.Bivand at nhh.no
Fri Sep 25 20:17:47 CEST 2015
On Fri, 25 Sep 2015, Jochen Albrecht wrote:
> A student of mine, who not only carefully read Roger's chapter in Fischer &
> Getis (2009) *Handbook of Applied Spatial Data Analysis* but then also
> wanted to explore the code snippets, pointed out to me that a data set
> referenced in that chapter does not seem to have a web presence.
> Does anyone on this group know of the Medicaid 1986 program quality scores
> data and where to find it on the Web? I have found later references to
> others who have worked with this data, which leads me to believe that it
> was originally compiled by the Public Citizen Health Research Group but
> their web site search tool also has no pointers to the data itself.
The data are from:
Jacoby, William G. (1997) Statistical Graphics for Univariate and
Bivariate Data. Thousand Oaks, CA: Sage.
I've put a copy of both the simulated data and Jacoby's tabulation of PQS
added to a shapefile on:
Hope this helps,
PS. I did ask about providing code and data for the handbook, but the
publisher was not then interested.
> "*The data set contains Medicaid program quality scores for 48 U.S.
> contiguous states for 1986, here stored externally in a shapefile, and read
> into a SpatialPolygonsDataFrame object*." .. "*The PQS variable belongs
> to the medicaid object, here a SpatialPolygonsDataFrame object, and is
> accessed using the $ operator.*"
>> stem(medicaid$PQS, scale = 2)
>> stripchart (medicaid$PQS, method = ,jitter’, vertical = TRUE)
>> hist(medicaid$PQS, col = ,grey90’, freq = FALSE)
>> lines(density(medicaid$PQS, bw = 15), lwd = 2)
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