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.

Children

kidsno - femkds  Number of children
adptkd           Any adopted, step or foster children?
agrkd1           Graduate's age at first child's birth
durmrb           Duration between marriage and first child
premrb           Have a premarital first birth?

There are up to 12 children recorded.
    kdsex*         Sex of child
    cmkdb*         Date of birth of child
    The suffix * can be 1 to 9, 0, a or b, where
        1 to 9 represents the first to the ninth child
        0 represents the tenth child
        a represents the eleventh child, and b the twelfth child 

sexlkd           Sex of last birth
cmlkd            Date of birth of last child
pregnw           Is graduate currently pregnant?
durk12 - durkab  Number of months between child and next child
durk1l           Number of months between first and last birth
sexslk           Sex of randomly selected child
ckkids           Birth order of randomly selected child
cmbslk           Date of birth of randomly selected child
sknomo           Number of months from selected child to next oldest child
sknymo           Number of months from selected child to next youngest child


NOTE:  Please see the selected child module for more information on the 
       selected child

kidsno: Number of children.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 284 265 549
0 none 303 322 625
1 434 353 787
2 1328 1199 2527
3 1085 1271 2356
4 575 800 1375
5 217 348 565
6 61 142 203
7 17 58 75
8 9 19 28
9 3 7 10
10 0 1 1
12 0 1 1
Note: Prior to 8/06, this variable label was "Number of Biological
or Natural Children"

See Appendix C - COR690 and COR690a for important information
regarding treatment of non-biological children.

malkds: Number of male children.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 690 549 1239
-2 587 587 1174
0 no male children 663 644 1307
1 1493 1542 3035
2 1074 1226 2300
3 345 536 881
4 114 181 295
5 20 49 69
6 5 7 12
7 0 4 4
8 0 1 1
Note: Prior to 8/06 this was labeled 'Number of Males in Sibship'

Any children beyond the tenth are not included in this variable.

femkds: Number of female children.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 690 549 1239
-2 587 587 1174
0 no female children 755 740 1495
1 1529 1578 3107
2 980 1122 2102
3 324 558 882
4 98 153 251
5 26 31 57
6 1 7 8
7 0 1 1
8 1 0 1
Note: Prior to 8/06 this was labeled 'Number of Females in Sibship'

Any children beyond the tenth are not included in this variable.

adptkd: Does graduate have any adopted, step or foster children? Not asked, only have this information if respondent volunteered it.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 NONRESPONDENT IN 1975 661 518 1179
0 NO 4222 4634 8856
1 YES 108 174 282
Note: See Appendix C - COR690 and COR690a for important information
regarding treatment of non-biological children.

agrkd1: Graduate's age at the birth of the first child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118, QE

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 695 553 1248
-2 587 587 1174
122 - 368 12.2 to 36.8 years (with implied decimal) 3709 4186 7895

durmrb: Number of months between graduate's first marriage and birth of the first child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 95a, 95b, 98a1, 111, 111a, 114a1, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 699 555 1254
-2 587 587 1174
0 Less than one month 15 4 19
1 - 8 757 848 1605
9 - 11 673 914 1587
12 - 18 771 958 1729
19 - 35 795 818 1613
36 - 205 694 642 1336
Note: See PREMRB for information about premarital conceptions and births.

See Appendix C - COR690 and COR690a for important information
regarding treatment of non-biological children.

premrb: Did graduate have a premarital first birth?

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 95a, 95b, 98a1, 111, 111a, 114a1, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 699 555 1254
-2 587 587 1174
0 NO 3559 4092 7651
1 YES 146 92 238
Note: All respondents whose first birth occurred during the same month as
the first marriage were scored 1 on this variable. Although this looks like
a low proportion, this is the proportion with a premarital birth, not a
premarital conception.

See Appendix C - COR690 and COR690a for important information
regarding treatment of non-biological children.

kdsex1: Sex of first child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 691 549 1240
-2 587 587 1174
1 MALE 1900 2154 4054
2 FEMALE 1813 2036 3849

cmkdb1: Date of birth of first child. Year on public release, century month on private.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 694 552 1246
-2 587 587 1174
-1 DON'T KNOW 1 1 2
386 - 724 374 1231 1605
725 - 742 608 976 1584
743 - 764 833 797 1630
765 - 799 890 697 1587
800 - 907 1004 485 1489
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (bottom-coded at 1957) on public release.

kdsex2: Sex of second child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 690 551 1241
-2 1021 940 1961
1 MALE 1679 1964 3643
2 FEMALE 1601 1871 3472

cmkdb2: Date of birth of second child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 693 550 1243
-2 1021 940 1961
-1 DON'T KNOW 0 1 1
432 - 907 CENTURY MONTHS 3277 3835 7112
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (bottom-coded at 1958) on public release.

kdsex3: Sex of third child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 685 547 1232
-2 2349 2139 4488
1 MALE 1028 1351 2379
2 FEMALE 929 1289 2218

cmkdb3: Date of birth of third child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 686 544 1230
-2 2349 2139 4488
481 - 907 CENTURY MONTHS 1956 2643 4599
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (bottom-coded at 1960) on public release.

kdsex4: Sex of fourth child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 682 543 1225
-2 3434 3410 6844
1 MALE 438 703 1141
2 FEMALE 437 670 1107

cmkdb4: Date of birth of fourth child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 682 543 1225
-2 3435 3410 6845
513 - 904 CENTURY MONTHS 874 1373 2247
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (bottom-coded at 1961) on public release.

kdsex5: Sex of fifth child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 679 544 1223
-2 4009 4210 8219
1 MALE 151 303 454
2 FEMALE 152 269 421

cmkdb5: Date of birth of fifth child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 678 543 1221
-2 4010 4210 8220
527 - 908 CENTURY MONTHS 303 573 876
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (bottom-coded at 1963) on public release.

kdsex6: Sex of sixth child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 677 541 1218
-2 4226 4558 8784
1 MALE 41 107 148
2 FEMALE 47 120 167

cmkdb6: Date of birth of sixth child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 676 541 1217
-2 4227 4558 8785
542 - 903 CENTURY MONTHS 88 227 315
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (bottom-coded at 1965 and top-coded at 1974) on public release.

kdsex7: Sex of seventh child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 676 541 1217
-2 4287 4700 8987
1 MALE 19 45 64
2 FEMALE 9 40 49

cmkdb7: Date of birth of seventh child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 676 541 1217
-2 4287 4700 8987
784 - 902 CENTURY MONTHS 28 85 113
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (bottom-coded at 1968 and top-coded at 1974) on public release.

kdsex8: Sex of eighth child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4304 4758 9062
1 MALE 5 18 23
2 FEMALE 7 10 17

cmkdb8: Date of birth of eighth child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4304 4758 9062
808 - 906 CENTURY MONTHS 12 28 40
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (1967-1972 collapsed into 1971 and 1973-1975 collapsed into 1974) on public release.

kdsex9: Sex of ninth child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4313 4777 9090
1 MALE 1 3 4
2 FEMALE 2 6 8

cmkdb9: Date of birth of ninth child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4313 4777 9090
823 - 899 CENTURY MONTHS 3 9 12
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (1968-1974 collapsed into 1973) on public release.

kdsex0: Sex of tenth child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4316 4784 9100
1 MALE 0 1 1
2 FEMALE 0 1 1

cmkdb0: Date of Birth of Tenth Child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4316 4784 9100
841 - 858 CENTURY MONTHS 0 2 2
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (all years coded 1971) on public release.

kdsexa: Sex of eleventh child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118
Revisions: Added 2/2014     
*NOT AVAILABLE ON PUBLIC RELEASE*

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4316 4785 9101
2 FEMALE 0 1 1

cmkdba: Date of Birth of Eleventh Child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118
Revisions: Added 2/2014     
*NOT AVAILABLE ON PUBLIC RELEASE*

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4316 4785 9101
859 0 1 1
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

kdsexb: Sex of twelfth child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118
Revisions: Added 2/2014     
*NOT AVAILABLE ON PUBLIC RELEASE*

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4316 4785 9101
1 MALE 0 1 1

cmkdbb: Date of Birth of Twelfth Child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118
Revisions: Added 2/2014     
*NOT AVAILABLE ON PUBLIC RELEASE*

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4316 4785 9101
873 0 1 1
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

sexlkd: Sex of last birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118
Revisions: Updated 2/2014     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 691 553 1244
-2 587 587 1174
1 MALE 1925 2197 4122
2 FEMALE 1788 1989 3777
Note: Prior to release 13.02, for the one person who had more than 10
children, this variable is the sex of the tenth child. From release
13.02 on, this variable is the sex of the last child reported.

cmlkd: Date of birth of last child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118
Revisions: Updated 2/2014     

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 694 553 1247
-2 588 587 1175
-1 DON'T KNOW 0 1 1
542 - 908 CENTURY MONTHS 3709 4185 7894
Note: Prior to release 13.02, for the one person who had more than 10
children, this variable is the century month of birth of the tenth
child. From release 13.02 on, this variable is the century month of
birth of the last child reported.

Last 2 digits of year times 12 plus 1 = January of year used in the
equation (e.g. 38 x 12 + 1 = 457 = January, 1938). See Appendix A -
COR607 for Conversion into century months.

Year of birth (top- and bottom-coded) on public release.

pregnw: Is the graduate currently pregnant?

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 130

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 662 550 1212
-2 4329 591 4920
-1 DON'T KNOW 0 1 1
0 NO 0 4102 4102
1 YES 0 82 82
Note: This variable is identical to pregnwf in the 1975 graduates Family/Work module.

durk12: Number of months between first and second birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 695 551 1246
-2 1021 940 1961
0 Zero months -- twins 34 31 65
1 - 15 718 927 1645
16 - 21 586 843 1429
22 - 29 741 806 1547
30 - 44 704 735 1439
45 - 175 492 493 985

durk23: Number of months between second and third birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 686 544 1230
-2 2349 2139 4488
0 Zero months -- twins 20 40 60
2 - 16 407 533 940
17 - 23 360 563 923
24 - 33 392 535 927
34 - 52 418 517 935
53 - 169 359 455 814

durk34: Number of months between third and fourth birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 684 543 1227
-2 3433 3410 6843
0 Zero months -- twins 15 24 39
1 - 17 194 292 486
18 - 26 186 302 488
27 - 38 175 275 450
39 - 60 166 277 443
61 - 164 138 203 341

durk45: Number of months between fourth and fifth birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 680 543 1223
-2 4009 4210 8219
0 Zero months -- twins 12 14 26
3 - 17 62 123 185
18 - 25 64 126 190
26 - 36 47 122 169
37 - 56 68 103 171
57 - 143 49 85 134

durk56: Number of months between fifth and sixth birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 677 541 1218
-2 4226 4558 8784
0 Zero months -- twins 0 5 5
6 - 15 24 39 63
16 - 24 21 44 65
25 - 33 15 47 62
34 - 48 16 48 64
49 - 111 12 44 56

durk67: Number of months between sixth and seventh birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 677 541 1218
-2 4286 4700 8986
0 Zero months -- twins 2 3 5
3 - 15 3 20 23
16 - 22 7 16 23
23 - 33 9 12 21
35 - 52 2 20 22
53 - 92 5 14 19

durk78: Number of months between seventh and eighth birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 676 540 1216
-2 4303 4758 9061
0 Zero months -- twins 1 0 1
10 - 15 2 6 8
16 - 24 4 5 9
25 - 30 3 4 7
31 - 38 1 6 7
43 - 111 1 7 8

durk89: Number of months between eighth and ninth birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 676 540 1216
-2 4312 4777 9089
0 Zero months -- twins 0 2 2
14 0 2 2
15 1 1 2
16 0 1 1
19 1 0 1
20 1 1 2
23 0 1 1
24 0 1 1

durk90: Number of months between ninth and tenth birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 676 540 1216
-2 4315 4784 9099
0 Zero months -- twins 0 1 1
18 0 1 1

durk0a: Number of months between tenth and eleventh birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118
Revisions: Added 2/2014     
*NOT AVAILABLE ON PUBLIC RELEASE*

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4316 4785 9101
18 0 1 1

durkab: Number of months between eleventh and twelfth birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118
Revisions: Added 2/2014     
*NOT AVAILABLE ON PUBLIC RELEASE*

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 675 540 1215
-2 4316 4785 9101
14 0 1 1

durk1l: Number of months between first and last birth.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 117, 118
Revisions: Updated 2/2014     

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 676 540 1216
-2 1025 941 1966
0 Zero months -- twins 10 6 16
5 - 31 729 695 1424
32 - 50 733 728 1461
51 - 74 657 798 1455
75 - 104 636 805 1441
105 - 230 525 813 1338
Note: Prior to release 13.02, for the one person who had more than 10
children, this variable is the length of time between the first birth
and the birth of the tenth child. From release 13.02 on, this variable
is the length of time between the first birth and the last birth.

sexslk: Sex of randomly selected child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118, 119

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 690 552 1242
-2 587 587 1174
1 MALE 1943 2204 4147
2 FEMALE 1771 1983 3754

ckkids: Birth order of randomly selected child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 119

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 681 543 1224
-2 587 587 1174
01 - 09 First to ninth child 3723 4196 7919

cmbslk: Date of birth of randomly selected child. Year on public release, century months on private release.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118, 119

Frequencies
Value Label Male Female Total
-3 NOT ASCERTAINED OR NONRESPONDENT 693 552 1245
-2 587 587 1174
-1 DON'T KNOW 0 1 1
432 - 907 CENTURY MONTHS 3711 4186 7897
Note: Last 2 digits of year times 12 plus 1 = January of year
used in the equation (e.g. 38 x 12 + 1 = 457 = January,
1938). See Appendix A - COR607 for Conversion into century months.

Year of birth (bottom-coded at 1957) on public release.

sknomo: Number of months from randomly selected child to next oldest child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118, 119
Revisions: Updated 10/06     

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 687 545 1232
-2 2259 2274 4533
0 Zero months -- twins 22 30 52
001 - 175 One to 175 months 2023 2477 4500

sknymo: Number of months from randomly selected child to next youngest child.

Data source: Graduate Respondent      Collected in: 1975      Mode: phone
Source variables: 118, 119
Revisions: Updated 10/06     

Frequencies
Value Label Male Female Total
-3 DON'T KNOW, NOT ASCERTAINED OR NONRESPONDENT 690 549 1239
-2 2230 2288 4518
0 Zero months -- twins 20 35 55
003 - 174 Three to 174 months 2051 2454 4505

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