2side
SDA Test Data
September 4, 2001
true
CODEBOOK
SDA Test Data
1,113 Cases
Introduction
The SDA test data file is extracted from the 1986 Race and Politics
Survey, a random-digit telephone survey of residents of the
San Francisco-Oakland metropolitan area.
The Survey Research Center of the University of California, Berkeley,
conducted the survey from August through October 1986, using the
CASES system for computer-assisted telephone interviewing.
Interviews were completed with 1,113 persons, and the response rate
was 68.1 percent.
Case Identification
CASEID: Case ID (numeric)
1,113 cases (Range of valid codes: 1,003-5,855)
Data type: numeric
Record/columns: 1/5-10
charid: Character version of CASEID
This version of the CASEID is a character variable,
instead of a numeric variable.
1,113 cases
Data type: character
Record/columns: 1/5-10
Attitudes About Government Spending
spend: Military spending
This country faces many problems, none of which can be solved
easily or inexpensively. I'm going to name some of these
problems. For each one, please tell me whether you think we're
spending too much money on them, too little money, or about
the right amount.
First, how about spending on the military, armaments, and defense?
% N VALUE LABEL
59.7 653 1 Too much
34.9 382 3 About right
5.4 59 5 Too little
17 8 Don't know
2 9 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Missing-data codes: 8,9
Record/column: 1/40
spend2: Urban problems spending
How about spending on solving the problems of the big cities?
% N VALUE LABEL
6.6 71 1 Too much
27.2 291 3 About right
66.1 706 5 Too little
41 8 Don't know
4 9 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Missing-data codes: 8,9
Record/column: 1/44
spend3: Crime reduction spending
How about spending on halting the rising crime rate?
% N VALUE LABEL
3.7 40 1 Too much
26.0 281 3 About right
70.3 758 5 Too little
31 8 Don't know
3 9 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Missing-data codes: 8,9
Record/column: 1/48
spend4: Welfare spending
How about spending on welfare or public assistance for
poor people?
% N VALUE LABEL
19.6 212 1 Too much
32.5 352 3 About right
47.9 518 5 Too little
29 8 Don't know
2 9 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Missing-data codes: 8,9
Record/column: 1/52
Experiment on Equal Opportunity
There were two versions of the question 'eqopp'. The content
of the random number variable 'eqrandom' indicates which
version of 'eqopp' each respondent was asked.
eqopp: Eq opp for Blks/Wmen not job of govt
While equal opportunity for [black and minorities / women]
to succeed is important, it's not really the government's job
to guarantee it.
Would you say that you basically agree or basically disagree
with that statement?
(The wording of this item depends on the random variable 'eqrandom'.)
% N VALUE LABEL
48.3 525 1 Agree
51.7 562 5 Disagree
18 8 Don't know
8 9 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Missing-data codes: 8,9
Record/column: 1/56
eqrandom: Random number variable for eqopp
The values of this variable were generated at random.
If this variable equals 1, eqopp asks about 'blacks and minorities'.
If this variable equals 2, eqopp asks about 'women'.
% N VALUE LABEL
49.1 547 1 Blacks
50.9 566 2 Women
----- -----
100.0 1,113 cases
Data type: numeric
Record/column: 1/60
Political Ideology and Party
ideo: Political ideology in general
In general, when it comes to politics, do you usually think of
yourself as a liberal, a conservative, a moderate, or what?
% N VALUE LABEL
35.3 360 1 Liberal
27.1 276 3 Conservative
37.6 383 5 Moderate
59 7 Never think of myself in those terms
20 8 Don't know
15 9 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Maximum code defined as valid: 5
Missing-data codes: 8,9
Record/column: 1/64
party: Party identification
Generally speaking, do you usually think of yourself as
a Republican, a Democrat, an Independent, or what?
% N VALUE LABEL
26.0 265 1 Republican
45.1 460 3 Democrat
28.9 295 5 Independent
64 6 No preference
9 7 Other
3 8 Don't know
17 9 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Maximum code defined as valid: 5
Missing-data codes: 8,9
Record/column: 1/68
Demographic Variables
age: Age of respondent in years
How old were you on your last birthday?
1,113 cases (Range of valid codes: 18-97)
Data type: numeric
Missing-data code: 99
Record/columns: 1/3-4
educ: Education in years of schooling
What is the highest grade of school or year of college
you COMPLETED?
% N VALUE LABEL
0.2 2 0
0.3 3 2
0.2 2 3
0.4 4 4
0.4 4 5
0.4 4 6
0.3 3 7
1.2 13 8 thru 8th
1.0 11 9
1.5 17 10
1.1 12 11
19.7 217 12 HS grad
8.4 92 13
16.8 185 14
7.7 85 15
21.0 231 16 Col grad
19.5 215 17
13 99 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Maximum code defined as valid: 17
Missing-data code: 99
Record/columns: 1/19-20
employed: Employment status
We'd like to know if you are now employed full-time,
employed part-time, on temporary layoff, unemployed and
looking for work, retired, a student, (a housewife), or what?
IF R ASKS: By full-time, we mean 35 or more hours per week.
% N VALUE LABEL
59.8 658 10 Fulltime
9.0 99 15 Parttime
0.5 6 20 Laidoff
2.8 31 40 Unemployed
11.5 126 50 Retired
0.6 7 60 Permanently disabled
0.5 6 65 Temporarily disabled
6.4 70 70 Keep house
8.5 93 80 Student
0.4 4 90 Other
13 99 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Missing-data code: 99
Record/columns: 1/23-24
gender: Gender of respondent
CODE OR ASK AS NEEDED: What sex are you?
% N VALUE LABEL
46.5 517 1 Male
53.5 596 2 Female
----- -----
100.0 1,113 cases
Data type: numeric
Record/column: 1/28
income: Income of household
(This is the income summary variable, giving household income
range, determined from a series of questions about whether
income is above or below certain figures.
The range '15-25' means, for example, that household income
is above $15,000 but less than $25,000.)
% N VALUE LABEL
13.3 137 1 < 15
2.1 22 2 15
13.1 135 3 15- 25
1.7 17 4 25
15.0 154 5 25- 35
4.0 41 6 35
7.8 80 7 35- 40
1.9 20 8 40
11.7 120 9 40- 50
2.0 21 10 50
27.5 283 11 50+
5 81
1 82
5 83
7 88 Don't know
1 91
13 92
1 94
50 99 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Maximum code defined as valid: 11
Missing-data codes: 88,99
Record/columns: 1/31-32
marital: Marital status
Are you now married, or are you living with someone in
a marriage-like relationship, widowed, divorced, or
have you never been married?
% N VALUE LABEL
44.2 486 1 Married
7.1 78 2 Like married
6.6 73 3 Widowed
3.4 37 4 Separated
12.6 138 5 Divorced
26.1 287 6 Never married
1 8 Don't know
13 9 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Missing-data codes: 8,9
Record/column: 1/36
race: Race or ethnic group
What race or ethnic group do you consider yourself?
(If necessary: We mean white, black, Asian, Mexican-American
Native American, or what?)
% N VALUE LABEL
71.6 794 1 White
13.4 149 2 Black
5.5 61 3 Hispanic
0.4 4 4 Native American
6.6 73 5 Asian
1.4 16 6 Filipino
0.5 5 7 Volunteered: Jewish
0.6 7 8 Other
4 99 Refused
----- -----
100.0 1,113 cases
Data type: numeric
Missing-data codes: 88,99
Record/columns: 1/71-72
Weight Variable
casewt: Overall sampling weight
(Overall sampling weight. This weight adjusts for sampling
stratum, number of adults in the selected household, and
the number of telephone lines into the selected household.
The weight is scaled so that the total number of weighted
cases equals the number of unweighted cases -- 1113.)
% N VALUE LABEL
0.2 2 0.107
0.4 4 0.160
0.2 2 0.214
12.1 135 0.321
0.4 5 0.428
1.0 11 0.481
34.6 385 0.641
0.3 3 0.802
4.7 52 0.962
0.1 1 1.069
0.1 1 1.123
34.9 388 1.283
0.4 5 1.604
7.5 84 1.924
2.9 32 2.566
0.3 3 3.207
----- -----
100.0 1,113 cases
Data type: numeric
Decimals: 3
Record/columns: 1/11-16
Sample Design
The Race and Politics survey was a random-digit telephone survey of
English-speaking persons 18 years of age or older living in the five-
county San Francisco-Oakland Bay Area. Operationally, the sampling
frame include all telephone numbers within the 415 area code. In 1986
this area code included the counties of San Francisco, Alameda, Marin,
Contra Costa, and San Mateo.
Telephone numbers identified on the Bellcore tape as being from the
cities of Oakland and Richmond were sampled at twice the rate as
telephone numbers in the rest of the Bay Area. Those cities have a
relatively high proportion of black residents, and the purpose of
oversampling those cities was to increase the proportion of blacks
in the sample. The sampling weight adjusts for this oversampling of
those two cities.
Within each selected household all adults over the age of 18 were
enumerated. One of the enumerated adults was selected at random to
be interviewed for this study. Many calls were made in order to
interview the one selected person in each sampled household. No
substitutions were allowed. Interviews were completed with 1,113
persons. The response rate was 68.1 percent.
Calculation of Weights
The data file includes a variable 'casewt', which adjusts for unequal
probabilities of selection between respondents. There are three
components to this weight variable:
(1) Since residents of Oakland and Richmond were oversampled by a
factor of two, the weight for respondents from those cities
included a factor to adjust for that oversampling. If S is the
stratum factor, S is .5 for respondents from Oakland and Richmond;
otherwise, S is 1.
(2) Since only one adult was selected from each household, the
probability of selection of each adult is 1/P, where P is the
number of adult persons in the household. The corresponding
weight factor for each respondent, consequently, is P.
(3) Those households with more than one telephone line have a greater
chance of being selected. The probability is proportional to T, where
T is the number of lines. The corresponding weight factor is 1/T.
The sampling weight for each case on the data file (casewt) is k*S*P/T,
where k is a constant to scale the weight so that the weighted number
of cases equals the unweighted number of cases (1,113).