Codes and Frequencies
STRETCHFTP reports the time period (never, day, week, month, year) that respondents used to describe the frequency of their stretching leisure-time physical activity. This variable must be interpreted in conjunction with STRETCHFNO, which reports the number of units corresponding to the time period in STRETCHFTP. For example, a respondent who does yoga once a day would have a STRETCHFNO value of 1 (to indicate 1 time) and a STRETCHFTP value of 2 (which is the code for "day").
STRETCHFWK, a recoded variable created by the staff at the National Center for Health Statistics, draws upon the information in STRETCHFTP and STRETCHFNO and reports the frequency of stretching leisure-time physical activities in terms of a single time unit, times per week.
Stretching leisure-time physical activities are described in the survey question itself as "physical activities designed to stretch your muscles such as yoga, or exercises like bending side-to-side, toe touches, and leg stretches."
The NHIS Survey Description for 2001 reports:
For further discussion of data collection on leisure-time physical activity in general for 1997 forward, see VIG10FNO (Frequency of vigorous activity 10+ minutes: Number of units).
- 2001: Sample adults age 18+.
- 2001 : SAMPWEIGHT