|
Baseline characteristics of the BCDDP Follow-up Study participants (n = 33,530) by quartile of total physical activity 1,2 |
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| Characteristic |
PAI Quartile (MET-hours/day) |
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| Q1 34.0–50.1 |
Q2 50.11–56.59 |
Q3 56.6–63.43 |
Q4 63.44–100.2 |
|
|
|
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| Number of participants |
8382 |
8450 |
8345 |
8353 |
| Physical activity (median hours/day) |
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| Sleep |
7.8 |
7.7 |
7.5 |
7.2 |
| Light |
13.6 |
10.2 |
8.0 |
5.3 |
| Moderate |
2.4 |
5.5 |
7.3 |
8.6 |
| Vigorous |
0.2 |
0.6 |
1.2 |
2.9 |
| Age (years) |
61.6 |
61.3 |
60.9 |
61.0 |
| Body mass index (kg/m2) |
25.0 |
24.7 |
24.5 |
24.3 |
| Personal history of diabetes mellitus (%) |
0.06 |
0.04 |
0.03 |
0.04 |
| Smoking status (%) |
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| Never smoker |
0.53 |
0.55 |
0.57 |
0.58 |
| Current smoker (< = 30 pack-years) |
0.06 |
0.07 |
0.06 |
0.08 |
| Current smoker (> 30 pack-years) |
0.07 |
0.06 |
0.05 |
0.05 |
| Former smoker (quit < = 14 years prior) |
0.14 |
0.13 |
0.13 |
0.11 |
| Former smoker (quit > 14 years prior) |
0.19 |
0.18 |
0.17 |
0.16 |
| Education (> high school; %) |
54.8 |
47.7 |
46.8 |
42.8 |
| Race (% white) |
89.8 |
90.1 |
89.7 |
87.3 |
|
1 Means unless noted otherwise. 2 All values (except age) were directly standardized to the age distribution of the cohort. | ||||
Calton et al. BMC Cancer 2008 8:63 doi:10.1186/1471-2407-8-63 |
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