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