MOD10DNO is a 3-digit-numeric variable.
000: Not in Universe
998: Unknown-not ascertained
999: Unknown-don't know
MOD10DNO reports the duration, in number of units, of sample adults' light or moderate leisure-time physical activities that lasted at least 10 minutes. This variable must be interpreted in conjunction with the variable MOD10DTP, which reports the time period (minutes or hours) corresponding to the number of units reported in MOD10DNO. For example, a respondent who walks for 30 minutes would have a MOD10DNO value of 30 and a MOD10DTP value of 1 (which is the code for "minutes").
MOD10DMIN, a recoded variable created by the staff at the National Center for Health Statistics, draws upon the information in MOD10DNO and MOD10DTP and reports the duration of light or moderate physical activity in a standardized unit of time, minutes.
Light or moderate leisure-activities activities are described in the survey questionnaire as activities that "cause only light sweating or a slight to moderate increase in breathing or heart rate." The Field Representative's Manuals for 1997 forward provide examples of light or moderate activities, although these examples were not routinely shared with respondents. These examples include leisurely walking or bicycling, slow swimming or dancing, and simple gardening.
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).
This variable is available beginning in quarter 3 of 1997. For data on the duration of respondents' light or moderate activity in the first half of 1997, see MOD20DNO2.
The question wording for MOD10DNO changed slightly in 2004.
For all years from 1997 forward, the survey section on physical activity began with the statement, "The next questions are about physical activities (exercise, sports, physically active hobbies ...) that you may do in your leisure time." Beginning in 2004, the question about duration of light or moderate activities reiterated the point that respondents were only to report leisure-time activities. From 1997 through 2003, interviewers asked, "About how long do you do these light or moderate activities each time"; for 2004 forward, they asked, "About how long do you do these light or moderate leisure-time physical activities each time?" Thus, beginning in 2004, the question wording made explicit what had previously been implicit and had been specified in the introductory statement only.
- 1997: Sample adults age 18+ in quarters 3 and 4 who participate in moderate activities for at least 10 minutes.
- 1998-2018: Sample adults age 18+ who participate in moderate activities for at least 10 minutes.
- 1997-2018 : SAMPWEIGHT