Codes and Frequencies
For persons age 18+ who have at least one activity limitation (LANY), and for whom a circulation problem was reported as a condition causing any activity limitation (CLIMCIRC), CLIMCIRCNO reports the number of time units which the respondent stated when reporting the duration of the circulation problem.
Data on the duration of limiting circulation problem were collected via the question, "How long [have/has] [you/person] had [a circulation problem (including blood clots)]?" 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, CLIMCIRCTP (which specifies the time unit) and CLIMCIRCNO (which 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 (CLIMCIRCY) and groups of months (CLIMCIRCMO).
- 1997-2013; 2014 2015 2016 2017 2018: Persons age 18+ limited due to circulatory problem.
- 1997-2018 : PERWEIGHT