Errata for 1979-2014 Data Release

National Longitudinal Survey of Youth - 1979 Cohort

Errata for 1979-2014 Data Release

Newest Errata [posted 9/1/2017]

Erroneous Occupation Codes (2002 and 2004)

A small number of incorrect occupation codes from survey years 2002 and 2004 have been revised. Several cases for two variables are affected. The cases and relevant variables with corrected values are listed below. These corrections will be reflected in the next public data release.

RNUM                                   
Question Name       
Variable Title                                                     
R00001.00 CASEID IDENTIFICATION CODE
R72096.00 OCCALL-EMP.01  OCCUPATION (CENSUS 3 DIGIT 00 CODES (ALL), JOB #01 2002
R78981.00 OCCALL-EMP.02  OCCUPATION (CENSUS 3 DIGIT 00 CODES (ALL), JOB #02 2004

 

R00001.00 SURVEY YEAR REFERENCE # INCORRECT VALUE CORRECTED VALUE
1306  2002  R72096.00  26  56
4564  2002  R72096.00  26  56
5585  2002  R72096.00  26  385
6170  2002  R72096.00  426  625
6785  2002  R72096.00  426  625
7576  2002  R72096.00  26  56
9112  2002  R72096.00  26  874
1306  2004  R78981.00  260  560
2027  2004  R78981.00  30  3920
2469  2004  R78981.00  30  3800
3933  2004  R78981.00  260  3800

 

Previously posted Errata

Missing 'Class of Worker' Data (2008 and 2010) [posted 5/16/2017]

Class of Worker data have been found to be missing in the NLSY79 2008 and 2010 for a small number of cases. With very few exceptions, the missing data are comprised of other reserved missing codes (-1/refused, -2/don’t know, -3/invalid missing). The missing codes will be included in the next public data release. Users may access a list of cases and variables for which data were added by clicking here.

2014 Spouse/Partner History Variables [posted 5/11/2017]

The 2014 Spouse/Partner History variables, NUMSPPTR14 (R99115.00) and RELSPPTR14 (R99116.00), contain values for all NLSY79 respondents rather than only those respondents interviewed in 2014. For those respondents interviewed in 2014, the values on NUMSPPTR14 and RELSPPTR14 incorporate the information provided from their interviews. For those respondents not interviewed in 2014, the values on NUMSPPTR14 and RELSPPTR14 reflect the information from the last time they were interviewed and not 2014 up-to-date information. In future data releases, values on NUMSPPTR14 and RELSPPTR14 will be restricted to only those respondents interviewed in 2014. NLSY79 respondents who have a value of zero on T50221.00 (SAMPWEIGHT), the sampling weight for the 2014 interview, should be treated as having a missing value on these variables.

Uncorrectable Data Errors

Legal Form of Business Not Collected for 31 Cases in 2012 (posted 1/23/2015)

Due to an error in the questionnaire, the legal form of a business (SES-BUSOWN-12.#) for 31 NLSY79 respondents was not collected in 2012. This error affects the respondents who reported a business in 2012 that matches a job reported during the last interview and who were last interviewed in 2008 and prior. The legal form of a business for these 31 cases should be coded as -3.

The IDs for these 31 respondents can be found in the following file: legalform12_invalidmissing.xlsx.

Since in 2012 we did not re-ask the legal form of a business that matched a job reported in the last interview, users wishing to determine the legal form of that business should use the employer number from the previous survey year variable in 2012 (EMPLOYER_EMPPREVID.#). For example, if EMPLOYER_EMPPREVID.# is 1, which means that the business is the same as job #1 in 2010, then legal form of that business in 2012 is the value of SES-BUSOWN-12.01 or BUSOWN-12.01 in 2010. If the business in 2012 is job #2 in 2010, then the legal form of that business is the value of SES-BUSOWN-12.02 or BUSOWN-12.02 in 2010.

Missing Occupation, Industry and Class of Worker in 1994 data items

The occupation, industry and class of worker information for 353 CPS employers were not collected during the 1994 interview. These CPS employers were either less than 9 weeks in duration since the last interview, or were employers for whom the respondent worked less than 10 hours per week. They were erroneously treated as other non-CPS employers with those characteristics, for which occupation, industry and class of worker information is not collected. For those employers that were also reported in the previous survey year, and for which the respondent confirmed that his/her occupation did not change since the previous survey year, the occupation, industry and class of worker codes from the previous survey year should also apply. Users may also data subsequent survey years in a similar manner to attempt to fill in more of this information.

This error is present on all current NLSY79 data releases.

Missing information on Union Affiliation/Collective Bargaining in 1994 data items

Due to an error in the questionnaire, information on union affiliation and collective bargaining on a number of employers was not collected. Respondents reporting a non-self-employed job should have answered these questions. This error affects employer #1 (generally the CPS employer) for 3,210 respondents of the 7141 respondents who should have been asked, employer #2 for 531 of the 2215 respondents who should have been asked, employer #3 for 128 of the 606 who should have been asked, employer #4 for 34 of 168 who should have been asked and employer #5 for 6 of 48 who should have been asked. This is 45% missing for employer #1, 24% missing for employer #2, 21% missing for employer #3, 20% missing for employer #4 and 13% missing for employer #5.

Conversely, information on union affiliation and collective bargaining was collected on a number of self-employed respondents, for whom these questions should not have been asked. This error affects employer #1 for 166 cases, employer #2 for 45 cases, and employers #3, #4 and #5 for 1 case each. This information for self-employed respondents (those with a code of "4" for class of worker) should be disregarded.

This error is present on all current NLSY79 data releases.

2 missing cases in 1994 data items

Due to probable machine glitches, the data from two (2) apparently completed interviews was rendered inaccessible. 1994 variables for cases #5078 and #10524 are missing. Any 1994 data items remaining for these cases is meaningless and should be discarded for purposes of analysis. The 1996 interview period for these cases spanned from the 1993 to the 1996 interview. Information that would have been collected at the 1994 interview is thus now included in the data for the 1996 survey year.

This data error is present on all current NLSY79 data releases.

NORC 1978 Memo

The 1978 NORC memo regarding race and ethnicity coding can be found here: NORC 1978 memo