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Length of time with child condition 12

Codes and Frequencies

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For sample children under age 18 who have at least twelve specific listed health conditions, KIDCTIM12 is a recoded variable, which reports how long the child has had the twelfth condition listed. For details on the twelfth condition, see KIDC12.

KIDCTIM12 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