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National Longitudinal Surveys

Sample Retention and Reasons for Non‐Interview

Sample Retention
Cohort Round Total Sample Interviewed Retention Rate (%) Description

NLSY97

Round 18 6,734 75.0

Retention rate is calculated by dividing the number of respondents interviewed in Round 18 by the number of respondents first interviewed in Round 1 (1997). The number of respondents eligible for the interview (including deceased respondents) was 8,984 beginning in Round 1 (1997).

This table provides Retention Rates in the NLSY97 by sample types and gender for all rounds.

NLSY79 Round 28 6,878 69.0

Retention rate is calculated by dividing the number of respondents interviewed by the number of respondents remaining eligible for interview. All 1979 (round 1) respondents including those reported as deceased are eligible for interviews, with the exception of those who have been permanently dropped from the sample. In the round 28 (2018) survey, 6,878 civilian and military respondents out of the 9,964 eligible were interviewed, for an overall retention rate of 69.0 percent.

This table provides Retention Rates in the NLSY79 by sample types for all rounds.

 

Reasons for Noninterview
Cohort Round Total Not Interviewed Refusal  Deceased  Not Locatable Others

NLSY97

Round 18 2,250 1,287 207 603 153
NLSY79 Round 27 5,808 933 1,033 780 3,062
 
  • This table provides reasons for noninterviews in the NLSY97 by sample types for all other previous rounds.
  • This table provides reasons for noninterviews in the NLSY79 by sample types for all other previous rounds.

 

Last Modified Date: April 23, 2021