WLS Codebooks and Flowcharts

Note: Codebooks contain frequency data from the private data release. For some variables, these differ from the frequencies in the public release. Variables that differ between the public and private versions include "(not available on public release)" as part of the variable description, or a note indicating the difference between the public and private versions.

Relative Body Mass Index (1957 Yearbook)

Relative Body Mass coded from 1957 Yearbook Photos

OVERVIEW
    
In January 2005 and the summer of 2008, teams of six WLS graduate students and
interns at the University of Wisconsin-Madison coded the senior yearbook
photographs of the participants in the Wisconsin Longitudinal Study (WLS) for
"relative  body mass" (RBM), a proxy for BMI.  For every photograph, coders 
recorded a RBM score ranging from one to eleven.  The RBM scores of  individual
coders may be used to assess the reliability and validity  of the RBM scale and
also for latent variable modeling.  

BRIEF VARIABLE DESCRIPTIONS

  roundflg   Round of coding

-------------------------------------------------------------------------------
Variables for individual coders:

  rbmc1    Relative Body Mass Scores for Coder 1, a 33 year-old male
  rbmc2    Relative Body Mass Scores for Coder 2, a 26 year-old male
  rbmc3    Relative Body Mass Scores for Coder 3, a 28 year-old female
  rbmc4    Relative Body Mass Scores for Coder 4, a 28 year-old female
  rbmc5    Relative Body Mass Scores for Coder 5, a 25 year-old female
  rbmc6    Relative Body Mass Scores for Coder 6, a 30 year-old male

-------------------------------------------------------------------------------
Additionally, two indexes of RBM were constructed.  

  urbmi    Unstandardized relative body mass index. URBMI was created by 
           calculating the mean of the RBM scores for individual coders.  

  srbmi    Standardized relative body mass index. SRBMI was created to 
           eliminate differences in means and variances between coders 
           that could cause certain coders to have disproportionate influence 
           over URBMI.  SRBMI was calculated separately for male and 
           female photos by (1) generating coder-specific z-scores, 
           (2) summing z-scores across coders and (3) dividing the sum 
           of z-scores by the number of coders in the study.   


For more details about the January 2005 coding, see COR835 in Appendix M

For more details about the summer 2008 coding, see COR1005F in Appendix M

roundflg: Round of coding.

Data source: Collected Information      Collected in: 1957      Mode: Not Applicable
Source variables: none

Frequencies
Value Label Male Female Total
. System missing - NR 877 821 1698
1 Coded in January of 2005 1406 1621 3027
2 Coded in summer of 2008 2708 2884 5592

srbmi: Standardized relative body mass index.

Data source: Collected Information      Collected in: 1957      Mode: Not Applicable
Source variables: none

Frequencies
Value Label Male Female Total
. System missing - NR 877 821 1698
-3.31 - -0.66 828 895 1723
-0.66 - -0.23 873 850 1723
-0.23 - 0.15 844 879 1723
0.15 - 0.64 773 950 1723
0.64 - 3.62 796 931 1727

urbmi: Unstandardized RBM index, mean of RBM scores for individual coders.

Data source: Collected Information      Collected in: 1957      Mode: Not Applicable
Source variables: none

Frequencies
Value Label Male Female Total
. System missing - NR 877 821 1698
1.67 - 5.33 1051 997 2048
5.50 - 6 1020 948 1968
6.17 - 6.67 873 1045 1918
6.83 - 7.83 769 1093 1862
8 - 11 401 422 823

rbmc1: Relative Body Mass Scores for Coder 1.

Data source: Collected Information      Collected in: 1957      Mode: Not Applicable
Source variables: none

Frequencies
Value Label Male Female Total
. System missing - NR 877 821 1698
1 2 14 16
2 21 112 133
3 137 271 408
4 390 427 817
5 641 414 1055
6 1215 1235 2450
7 807 1248 2055
8 540 537 1077
9 288 196 484
10 63 42 105
11 10 9 19

rbmc2: Relative Body Mass Scores for Coder 2.

Data source: Collected Information      Collected in: 1957      Mode: Not Applicable
Source variables: none

Frequencies
Value Label Male Female Total
. System missing - NR 877 821 1698
1 1 1 2
2 20 42 62
3 122 197 319
4 435 461 896
5 953 728 1681
6 1237 1288 2525
7 735 1003 1738
8 376 528 904
9 196 216 412
10 35 37 72
11 4 4 8

rbmc3: Relative Body Mass Scores for Coder 3.

Data source: Collected Information      Collected in: 1957      Mode: Not Applicable
Source variables: none

Frequencies
Value Label Male Female Total
. System missing - NR 877 821 1698
1 3 2 5
2 8 27 35
3 65 72 137
4 241 234 475
5 759 532 1291
6 902 970 1872
7 952 1526 2478
8 599 608 1207
9 457 447 904
10 96 73 169
11 32 14 46

rbmc4: Relative Body Mass Scores for Coder 4.

Data source: Collected Information      Collected in: 1957      Mode: Not Applicable
Source variables: none

Frequencies
Value Label Male Female Total
. System missing - NR 877 821 1698
1 0 4 4
2 18 21 39
3 69 123 192
4 391 410 801
5 946 515 1461
6 1429 1454 2883
7 574 1105 1679
8 364 564 928
9 226 253 479
10 75 43 118
11 22 13 35

rbmc5: Relative Body Mass Scores for Coder 5.

Data source: Collected Information      Collected in: 1957      Mode: Not Applicable
Source variables: none

Frequencies
Value Label Male Female Total
. System missing - NR 877 821 1698
1 2 5 7
2 19 79 98
3 108 190 298
4 428 463 891
5 877 535 1412
6 1019 1157 2176
7 866 1123 1989
8 508 682 1190
9 196 218 414
10 58 44 102
11 33 9 42

rbmc6: Relative Body Mass Scores for Coder 6.

Data source: Collected Information      Collected in: 1957      Mode: Not Applicable
Source variables: none

Frequencies
Value Label Male Female Total
. System missing - NR 877 821 1698
1 1 1 2
2 4 15 19
3 54 57 111
4 229 166 395
5 1049 727 1776
6 1494 1643 3137
7 706 1107 1813
8 384 549 933
9 148 208 356
10 42 31 73
11 3 1 4

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