Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
Description
Source of information
Roster ID of tracking target from HBS/NPS YEAR (1/2/3)
Imputation and derivation
Imputation
Roster ID of tracking target from HBS/NPS YEAR (1/2/3)
Others
Security
Roster ID of tracking target from HBS/NPS YEAR (1/2/3)