Current Population Survey Design and Methodology - Census Bureau
Current Population Survey Design and Methodology - Census Bureau
Current Population Survey Design and Methodology - Census Bureau
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Table 11–1. <strong>Current</strong> <strong>Population</strong> <strong>Survey</strong> Supplements September 1994−December 2004—Con.<br />
Title Month Purpose Sponsor<br />
Computer Use/Internet<br />
Use<br />
November 1994, October 1997,<br />
December 1998, August 2000,<br />
September 2001, October 2003<br />
Provide information about household access to computers <strong>and</strong> the use of the<br />
Internet or World Wide Web.<br />
Participation in the Arts August 2002 Provide data on the type <strong>and</strong> frequency of adult participation in the arts; training<br />
<strong>and</strong> exposure (particularly while young); <strong>and</strong> their musical artistic activity<br />
preferences.<br />
Volunteers September 2002, 2003, 2004 Provide a measurement of participation in volunteer service, specifically about<br />
frequency of volunteer activity, the kinds of organizations volunteered with, <strong>and</strong><br />
types of activities chosen. Among nonvolunteers, questions identify what barriers<br />
were experienced in volunteering, or what encouragement is needed to increase<br />
participation.<br />
Cell Phone Use February 2004 Provide data about household use of regular l<strong>and</strong>line telephones <strong>and</strong> household<br />
use of cell phones. If both were used in the household, it asked about the amount<br />
of cell phone usage.<br />
The homeowner vacancy rate is calculated as the ratio of<br />
vacant year-round units for sale to the sum of owneroccupied<br />
units, vacant year-round units sold but awaiting<br />
occupancy, <strong>and</strong> vacant year-round units for sale.<br />
Weighting procedure<br />
Since the HVS universe differs from the CPS universe, the<br />
HVS records require a different weighting procedure from<br />
the CPS records. The HVS records are weighted by the CPS<br />
basic weight, the CPS special weighting factor, two HVS<br />
adjustments <strong>and</strong> a regional housing unit (HU) adjustment.<br />
(Refer to Chapter 10 for a description of the two CPS<br />
weighting adjustments.) The two HVS adjustments are<br />
referred to as the HVS first-stage ratio adjustment <strong>and</strong> the<br />
HVS second-stage ratio adjustment.<br />
The HVS first-stage ratio adjustment is comparable to the<br />
CPS first-stage ratio adjustment in that it reduces the contribution<br />
to variance from the sampling of PSUs. The<br />
adjustment factors are based on 2000 census data. There<br />
are separate first-stage factors for year-round <strong>and</strong> seasonal<br />
housing units. For each state, they are calculated as<br />
the ratio of the state-level census count of vacant yearround<br />
or seasonal housing units in all NSR PSUs to the corresponding<br />
state-level estimate of vacant year-round or<br />
seasonal housing units from the NSR PSUs in sample.<br />
The appropriate first-stage adjustment factor is applied to<br />
every vacant year-round <strong>and</strong> seasonal housing units in the<br />
NSR PSUs.<br />
The HVS second-stage ratio adjustment, which applies to<br />
vacant year-round <strong>and</strong> seasonal housing units in SR <strong>and</strong><br />
NSR PSUs, is calculated as the ratio of the weighted CPS<br />
interviewed housing units after CPS second-stage ratio<br />
adjustment to the weighted CPS interviewed housing units<br />
after CPS first-stage ratio adjustment.<br />
The cells for the HVS second-stage adjustment are calculated<br />
within each month-in-sample by census region <strong>and</strong><br />
type of area (metropolitan/nonmetropolitan, central<br />
NTIA<br />
NEA<br />
USA<br />
Freedom<br />
Corps<br />
BLS/<strong>Census</strong><br />
city/balance of MSA, <strong>and</strong> urban/rural). This adjustment is<br />
made to all eligible HVS records.<br />
The regional HU adjustment is the final stage in the HVS<br />
weighting procedure. The factor is calculated as the ratio<br />
of the HU control estimates by the four major geographic<br />
regions of the United States (Northeast, South, Midwest,<br />
<strong>and</strong> West) supplied by the <strong>Population</strong> Division, to the sum<br />
of estimated occupied (from the CPS) plus vacant HUs,<br />
through the HVS second stage adjustment. 1 This factor is<br />
applied to both occupied <strong>and</strong> vacant housing units.<br />
The final weight for each HVS record is determined by calculating<br />
the product of the CPS basic weight, the CPS special<br />
weighting factor, the HVS first-stage ratio adjustment,<br />
<strong>and</strong> the HVS second-stage ratio adjustment. The occupied<br />
units in the denominator of the vacancy rate formulas use<br />
a different final weight since the data come from the CPS.<br />
The final weight applied to the renter- <strong>and</strong> owner-occupied<br />
units is the CPS household weight. (Refer to Chapter 10<br />
for a description of the CPS household weight.)<br />
American Time Use <strong>Survey</strong> (ATUS)<br />
Description<br />
The American Time Use <strong>Survey</strong> (ATUS) collects data each<br />
month on how people spend their time. Data collection for<br />
the ATUS began in January 2003. There are seventeen<br />
major categories for activities such as work, sleep, eating<br />
<strong>and</strong> drinking, leisure <strong>and</strong> sports. Data are tabulated by<br />
variables such as sex, race/ethnicity, age, <strong>and</strong> education.<br />
Sample<br />
Approximately 2,200 households are selected for ATUS<br />
each month, <strong>and</strong> each household is interviewed just once.<br />
The ATUS sample comes from CPS sample households that<br />
1 The estimate of occupied housing units from the CPS is<br />
obtained by aggregating the family weight of each interviewed<br />
CPS household.<br />
11–4 <strong>Current</strong> <strong>Population</strong> <strong>Survey</strong> Supplemental Inquiries <strong>Current</strong> <strong>Population</strong> <strong>Survey</strong> TP66<br />
U.S. <strong>Bureau</strong> of Labor Statistics <strong>and</strong> U.S. <strong>Census</strong> <strong>Bureau</strong>