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NHANES III Public-Use Data Files Errata

This is a listing of errata that currently exist in the Web-based datasets. This listing does not include errata found in the CD-ROM or DVD releases of NHANES III data that have been corrected in the Web-based datasets. Users should use the Web-based data files as they are the most current and up-to-date.

Appearance of 9998 value instead of missing value

For the following variables, the 9999 fill value was inadvertently coded as 9998 in the data file. Please treat these 9998 values as if they were 9999, as reflected in the documentation. In other words, for the listed data items, the value indicated as 9999 in the documentation will appear as 9998 in the actual data file, due to a programming error in the data production process. We regret the error.

Variables with Incorrect 9998 values
Variable Data File
HYAITMOYouth
HXPH21SExam, EXAMSE
MAPF51Exam
MAPF54RExam
MAPF55Exam
HAB6SAdult
HAD9SAdult
HAS12SAdult
HAT1SAdult
HAT3SAdult
HAT15SAdult
HAV1SAdult
HAV4SAdult
HAV6SAdult
HAV7SAdult
MARF51EXAMSE
MARF54EXAMSE

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