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Age when child condition 12 noticed

Codes and Frequencies

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For sample children under age 18 who have at least twelve specific listed health conditions, KIDCNAG12 reports the age of the child when the twelfth condition was first noticed. Responses could be given in either months or years. For details on the twelfth condition, see KIDC12.

KIDCNAG12 was introduced in 1981 as part of the Child Health Supplement. For related variables, please use the IPUMS NHIS search function or drop-down menus.


There are no comparability issues with this variable.


  • 1981: Sample persons under age 18 with 12 or more listed health conditions.


  • 1981