Table 1.
Descriptive Characteristics of Participants With ≥5 Years of Follow-up by Total Physical Activity, NHANES, 2003–2006
| Total (n = 3542) | Q1 CPM (n = 884) | Q2 CPM (n = 887) | Q3 CPM (n = 885) | Q4 CPM (n = 886) | |
|---|---|---|---|---|---|
| Age (years) | 56.1 (11.4) | 65.3 (13.6) | 56.9 (10.9) | 54.4 (9.4) | 50.6 (7.7) |
| Sex (% female) | 54 | 65 | 60 | 57 | 37 |
| BMI kg/m2) | 28.7 (6.0) | 29.9 (7.5) | 29.5 (6.7) | 28.7 (5.3) | 27.2 (4.5) |
| Overweight (%) | 38 | 38 | 34 | 38 | 41 |
| Obese (%) | 34 | 40 | 39 | 34 | 25 |
| Education (%) | |||||
| < High School | 15 | 21 | 14 | 12 | 15 |
| High School (including GED) | 26 | 29 | 26 | 26 | 25 |
| > High School | 59 | 50 | 60 | 62 | 61 |
| Race/ethnicity (%) | |||||
| Mexican-American | 5 | 3 | 4 | 6 | 7 |
| Non-Hispanic White | 78 | 81 | 78 | 78 | 78 |
| Non-Hispanic Black | 9 | 10 | 10 | 10 | 8 |
| Other | 7 | 7 | 8 | 7 | 7 |
| Smoking (%) | |||||
| Never | 49 | 46 | 50 | 52 | 47 |
| Former | 32 | 36 | 30 | 29 | 33 |
| Current | 19 | 18 | 20 | 20 | 20 |
| Alcohol consumption (%) | |||||
| Never | 10 | 16 | 12 | 11 | 5 |
| Former | 20 | 28 | 19 | 19 | 15 |
| Current | 65 | 53 | 64 | 65 | 75 |
| Missing | 5 | 4 | 6 | 6 | 4 |
| Married/living with partner (% yes) | 73 | 63 | 71 | 75 | 79 |
| Mobility limitations (% yes) | 11 | 22 | 13 | 8 | 4 |
| No. of medical conditions | 0.38 (0.79) | 0.78 (1.21) | 0.39 (0.79) | 0.31 (0.62) | 0.17 (0.49) |
| Total physical activity (CPM) | 297 (140) | 134 (39) | 222 (22) | 302 (26) | 473 (106) |
| Light physical activity (min/day)a | 333 (89) | 236 (64) | 308 (55) | 353 (61) | 401 (79) |
| Moderate-to-vigorous physical activity (min/day)a | 21.6 (21.3) | 3.7 (4.0) | 10.9 (6.8) | 20.0 (9.4) | 45.0 (22.7) |
| Sedentary time (hrs/day)a | 8.2 (1.6) | 10.1 (1.5) | 8.8 (0.9) | 7.9 (0.9) | 6.7 (1.3) |
Mean (SD) unless stated otherwise. CPM counts/min, Q Quartile, BMI Body mass index
aCalculated as % wear-time in activity/sedentary domain multiplied with mean wear-time of sample