NLS Workshop 2007
mcclaski@chrr.osu.edu
usersvc@chrr.osu.edu
Web Investigator
1. Choose cohort
(a) Tool bar buttons
2. Filters, using the NLSY79
(a) Indexes
1. Word in Title- all words used in the variable titles
2. Area of interest- variables grouped on a common theme
i. Common: id, race/eth, sex, samp type, reason for nonint
ii. Created Variables: mar stat, TNFI, pov, HGC, age, ESR
iii. Fertility: spouse/part, constructed fertility vars
iv. Profiles: AFQT
v. School Survey
vi. Trans Survey
vii. Health Module
viii.Work Historty
3. Year- all survey years
4. R number unique identifier
i. sequential number,
5. Q-name an unique name to identify same variables across years
i. PAPI year
ii. CAPI year
(b) String Search on fields
1. -title
2. -question name
3. -question text
3. View data for case#
4. Using multiple filters
a. using “keep” filter
b. using “not”
c. Rnumber, vars in sequence, can be used to see vars in context of questionnaire
5 Tagging variables
a-Tag a var
b-Tag a page of vars
(c) -Tag all matching
(d) -Name and Save tagsets
1. Do this often
6 Making an Extract
aName and Save
b-make a codebook only
c-make a data extract
7 Bring extracted data set into SPSS
a. Show contents of zipfile
Child and Young Adult
Area of Interest
Child Background, chd id, mother id, age vars
Maternal Household Composition
Assessments
Reference Numbers
C-num, child vars
Y-num, young adult vars
Missing values
N=number of all children born to NLSY79 mothers
-7 applied when not valid code, refusal, or DK is available
Show Child/YA User’s Guide
2) Skip Patterns and Understanding Universes
i) Through Questionnaire
(a) The Questionnaire is the conversation of the survey
(b) -Two basic types of variables have been compressed out of the questionnaire to provide a more compact and readable version.
1. -Question records that not necessary to the understanding of the flow (conversation) of the survey. Ex. Internal functions.
2. -Looped (repetitive) questions are eliminated, only the first loop appears
(c) NLSY97 Round 6 Side by Side with Codebook
i. Search qname field for YFRD in 2002
(d) Basic sequence and branching
1. -By convention, all respondents go to the first question of every section. And to the last question, but it may have been compressed out.
2. Best Friends (section 14), straight forward skips with some branching
i. At YFRD-50 is a skip based on age
ii. Does not apply goes to next section YHEA-50
iii. Branching at YFRD-110
iv. Codes without branching info go to Default Next.
v. Only “someone else” is asked for age, presumably the age as already been asked for the other people.
vi. 1899 + 64 = 1963 at YFRD-210, “someone else” + sexual partner
vii. At YFRD-230, the people come in from Default Next at YFRD-50, total of 2708
(e) Loops and nested loops
1. Loops are repetitive questions that are asked multiple times
i. Ex, a set of questions asked for each member of the household, or each school attended, each spouse or partner
2. Marriage (section 7),
i. Show variables for YMAR in 2002
ii. -First loop begins at YMAR-3000, for each spouse partner at YMAR-2900.
iii. -Second (nested) loop begins at YMAR-5000- LOOP-BEGIN to pick up R’s marital changes for each spouse partner.
iv. -Second loop ends at YMAR-6200-LOOP-END.
v. -Back to first loop.
vi. -Second loop begins at YMAR-6500-LOOP- BEGIN to pick up ever lived with spouse/partner again
vii. -Third loop begins at YMAR-7500-LOOP-BEGIN, to pick up marital status changes during period.
viii.Third loop ends at YMAR-8900-LOOP-END.
ix. Back to second loop
x. Third loop begins at YMAR-9400-LOOP-BEGIN
xi. Third loop ends at YMAR-10600-LOOP-END
xii. Back to second loop
xiii.Second loop ends at YMAR-111000-LOOP-END
xiv.Back to first loop
xv. First loop ends at YMAR-13000-LOOP-END
xvi.End of Marital Section
xvii. Check area of interest Roster Item for vars in loops, will make your life easier
xviii. Roster items include:
xix.Children
xx. Household members
xxi.School enrolment periods
xxii. Non-resident children
xxiii. Some partner information
xxiv. Training
xxv. Employment