[CTPP] 5-year ACS data

[Patty Becker]

I share Ed's concern over the impact of these rules, although some of 
them are the result of the switch to the ACS itself.

The way the Census samples group quarters for inclusion in the ACS 
prohibits low level geography reporting for them. We'll be lucky to 
get anything meaningful by county. However, we will get the SF1 and 
SF2 tables from the 2010 census itself, so at least we will know 
where the GQ are, the type, and the population in them, by 
block.  (See Table P37 in the 2000 SF1.)  I would submit that, for 
the most part, people who live in GQ are not very active in terms of 
using the transportation network, in any event.

The basic rule that there will be suppression in tables with more 
than 100 cells calls for a major rewrite of the table structure 
itself--for everyone, not just the CTPP community. For example, right 
now getting the unemployment rate requires you to use a table with 
more than 100 cells.  This needs to be fixed by adding a simple table 
showing labor force status, maybe by sex, but definitely not by age. 
This will result in a smaller table and there will be no suppression. 
I'm sure that many of you can find your favorite examples of this problem.

In your responses to the FR notice, please emphasize the need to redo 
the detailed table structure. That's the only way we're going to get 
any semblance of the data we need.

Patty Becker








At 03:35 PM 3/20/2009, you wrote:
>Content-Type: text/plain; charset=windows-1252; format=flowed
>Content-Transfer-Encoding: 8bit
>X-MIME-Autoconverted: from 8bit to quoted-printable by 
>ryoko.chrispy.net id n2KJZJI6014332
>
>Now that dust has settled maybe we can get on with the order of the 
>day.  On March 6th the Census Bureau published a notice in the 
>Federal Register asking for comments on the 5-year ACS data 
>products.  As part of the notice the users were given a set of rules 
>that will establish data availability.
>
>Did you know that NO Block Group data will be available for Group 
>Quarters (Rule 1)?  Or that all Block Group and most Tract data for 
>"Means of Transportation to Work" crossed with any variable, even 
>Sex will NEVER be available? (Rule 7).  Attached is an analysis of 
>the impact of Rule 7 using some information gathered through our 
>CTPP development efforts.
>
>Things do not look good!
>
>The Federal Register notice
>http://www.census.gov/acs/www/Downloads/FedRegNotice_E9-4803.pdf
>
>The Real Rules
>http://www.census.gov/acs/www/Downloads/proposal_acs5yearproducts.pdf
>
>The 5-year table shells prior to the application of any suppression rules
>http://www.census.gov/acs/www/Products/users_guide/
>although the website says it applies to 2005-2007 ACS data these are 
>the same tables for the 5-year data according to the Census Bureau
>
>--
>Ed Christopher
>708-283-3534 (V)
>708-574-8131 (cell)
>
>FHWA RC-TST-PLN
>19900 Governors Dr
>Olympia Fields, IL 60461
>
>
>
>_______________________________________________
>ctpp-news mailing list
>ctpp-news at chrispy.net
>http://www.chrispy.net/mailman/listinfo/ctpp-news

-------------------------------------------------------------------------------------------------
Patricia C. (Patty) Becker         248/354-6520
APB Associates/SEMCC       FAX 248/354-6645
28300 Franklin Road                 Home 248/355-2428
Southfield, MI  48034                     pbecker at umich.edu 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.chrispy.net/pipermail/ctpp-news/attachments/20090322/554574a2/attachment.html