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Onset of condition 12: Recode

Codes and Frequencies

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For sample children under age 18 who have at least twelve specific listed health conditions, KIDCONSET12 is a recoded variable which reports the length of time since the twelfth condition was first noticed, in intervals of 3 months or less, 3-12 months, or more than 12 months ago. For details on the twelfth condition, see KIDC12.

KIDCONSET12 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