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Duration of limiting second unclassified adult problem: No. units

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CLIMANEC2NO reports the number of time units the respondent stated when reporting the duration of a limiting, "not elsewhere classified," condition. . This information is reported only for persons age 18+ who had at least one activity limitation (LANY), and who identified a second problem, not listed on the interviewer-provided flashcard and not one of the other categories available to interviewers for purposes of classifying conditions, as a cause of any activity limitation.

Data on the duration of the limiting "not elsewhere classified" condition were collected via the question, "How long [have/has] [you/person] had [condition]?" Respondents could answer this open-ended question using the time unit of their choice (i.e., days, weeks, months, years, or since birth). The original responses to the question are reported in two complementary variables, CLIMANEC2TP (which specifies the time unit) and CLIMANEC2NO (which, as noted above, reports the number of such units). As noted in the Codebooks for 1997 forward, "years are topcoded at 85." For the NHIS public use files, the National Center for Health Statistics (NCHS) recoded the results from these two variables to create two other variables using standard time units: years (CLIMANEC2Y) and groups of months (CLIMANEC2MO).


The variable is completely comparable across time.


  • 1997-2013; 2014 2015 2016 2017 2018: Persons age 18+ limited due to second unclassified impairment or problem.


  • 1997-2018