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Substance 4 endangers health: Health effect 3

Codes and Frequencies

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For sample persons ages 18 and older who were employed in the last two weeks, and who reported to be exposed to at least four harmful substances that could endanger her/his own health, WEXSUB4HEL3 reports the third type of health effect for the fourth reported substance. See the Codes tab for response options. Persons could report up to six such substances, and for each substance, they could report up to four ways their own health could be endangered as a result of it.

This variable was introduced in 1985 as part of a series of variables with information on occupational safety and health. For related variables, please use the IPUMS NHIS search function and drop-down menus.


This variable has no comparability issues.


  • 1985: Sample persons age 18+ who were employed in the past 2 weeks who are exposed to any dangerous substances and mentioned a fourth substance; REF/DKA/NA substance and mentioned second way how fourth substance effects health; REF/DKA/NA how effects.


  • 1985