National Longitudinal Surveys

Sample Retention and Reasons for Non‐Interview

Sample Retention
CohortRoundTotal Sample InterviewedRetention Rate (%)Description

NLSY97

Round 186,73475.0

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.

NLSY79Round 276,91269.4

Retention rate is calculated by dividing the number of respondents interviewed in Round 27 by the number of eligible respondents remaining eligible for interview. In the round 27 (2006) survey, 6912 respondents out of the 9,964 eligible respondents were interviewed. Included in the eligible sample are deceased and difficult to field respondents whom NORC does not attempt to contact.

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

 

Reasons for Noninterview
CohortRoundTotal Not InterviewedRefusal Deceased Not LocatableOthers

NLSY97

Round 182,2501,287207603153
NLSY79Round 275,7741,0609158002,999
 
  • 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 24, 2020