Friday, January 16, 2009

1971 Profile Data for Houston, BC

Question

I have a graduate student who wants all possible profile data for the community of Houston (BC) for 1971-1991. I think we’re OK for everything but 1971. If the figures exist in print, we should have them on microfiche. I checked the 1971 catalogue on Laine’s site at http://prod.library.utoronto.ca:8090/datalib/codebooks/c/cc71/cen71pub.pdf, and I’m not seeing any Stats Can catalogue numbers that look promising in terms of profile data for census subdivisions. Can anyone lead me in the right direction with this?




Of course, if we have anything electronic, that would be even better…

Answer

1) I don't think that you will find a complete profile of Houston in print format since it is a small community. In 1971 print products, many variables are given for larger sdr only.
However, you could extract more data from electronic files in the BSTs at the enumeration areas level. You can find description of available variables and related files on Laine's site at
http://www.chass.utoronto.ca/datalib/cc71/cc71bsts.htm

Most of these files (or all of them?) are available on the DLI ftp site.

Since the data in these tables are given at the EA level, the disadvantage is that you will have to extract Houston EA data (which are 301-304 in 1971 census) from the tables and aggregate them to have the complete SDR.

Last year, I have made a presentation on this topic at DLI Training Session of Sherbrooke. If you want, I can send you the PowerPoint presentation (in French only but could help) that I have prepared for this in a seperate mail ; I should make a final revision of this document to post it on training repository!

2) Because of the problems of area suppression and random rounding, I would
suggest using the municipality level (CSD) files from the 1971 census,
rather than the EA-level files.

Houston BC is prov=59 cd=51 csd=34 in 1971:
http://www.chass.utoronto.ca/datalib/cc71/cc71csd_codes.txt

Follow-up Question

Yes, I would love to see your PowerPoint presentation.

Also, what document did you use to determine the enumeration code range for Houston for 1971?

Follow-up Answer

You will find the cen71-offical-list files (pdf files) on the DLI ftp site under census/1971/doc (first I tried to find it into the geography directory, but it is really under census).

I've just read Laine's message.  Yes, some very small numbers may be very difficult (or impossible) to interpret but it may be sometime useful to know how to get data from EA.

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