Dear Everyone:
During the CTPP webinars
held in May and June, and additional discussions passed along from the
If we have specific
questions, we can ask Ed Welniak at the CB for assistance.
Also, if you have a
recommendation for an NCHRP 08-36 research project (AASHTO Standing Committee
on Planning) http://www.trb.org/trbnet/projectdisplay.asp?projectid=909
, please send your 1-page research idea to Jonette Kreideweis Jonette.kreideweis@dot.state.mn.us
There are 2 current NCHRP
08-36 projects related to ACS in progress. See tasks 71 and 81 in the
list above.
When to use various
demographic household survey data:
http://www.census.gov/Press-Release/www/2007/guidance_acs_cps.htm
http://www.census.gov/hhes/www/poverty/description.html
Comparing the ACS to the
CPS, "Evaluation of Income Estimates"
http://www.census.gov/acs/www/Downloads/Evaluation_of_Income_Estimates31207.doc
Split panel test using
previous 12 month and previous calendar year as reference periods:
http://www.census.gov/acs/www/AdvMeth/Papers/ACS/Paper16.htm
Another paper from 2003 ASA
meetings --
http://www.census.gov/acs/www/Downloads/ACS/ASA_nelson.pdf
Bruce Webster's most recent
ASA paper comparing CPS and ACS income using exact match data:
(See attached file: Webster
2007 ASA CPS-ACS Paper.doc)
Census: Subject definitions:
"For several reasons,
the income data shown in census tabulations are not directly comparable with
those that may be obtained from statistical summaries of income tax returns.
Income, as defined for federal tax purposes, differs somewhat from the Census
Bureau concept. Moreover, the coverage of income tax statistics is different
because of the exemptions of people having small amounts of income and the
inclusion of net capital gains in tax returns. Furthermore, members of some
families file separate returns and others file joint returns; consequently, the
income reporting unit is not consistently either a family or a person."
Elaine Murakami
FHWA Office of Planning
206-220-4460