Table 1.
Sample characteristics by Physical Activity (PA) and Sitting Time (ST) Categories
| Combined Categories of PA and ST | ||||||
|---|---|---|---|---|---|---|
| Total | Sufficient PA/Low ST | Sufficient PA/High ST | Insufficient PA/Low ST | Insufficient PA/High ST | p-value | |
| No. (%) | 2832 | 905(32%) | 656 (23%) | 702 (25%) | 569 (20%) | - |
| Sex | < 0.001 | |||||
| Male | 50.0% | 57.5% | 44.7% | 50.7% | 43.4% | |
| Female | 50.0% | 42.5% | 55.3% | 49.3% | 56.6% | |
| Age group | < 0.001 | |||||
| 30-39 years | 33.6% | 35.6% | 27.7% | 38.0% | 31.6% | |
| 40-49 years | 33.3% | 29.8% | 34.3% | 36.8% | 33.4% | |
| 50-59 years | 33.1% | 34.6% | 38.0% | 25.2% | 35.0% | |
| Marital status | < 0.001 | |||||
| Unmarried | 25.5% | 20.8% | 31.3% | 24.5% | 27.6% | |
| Married | 74.5% | 79.2% | 68.8% | 75.5% | 72.4% | |
| Educational level | < 0.001 | |||||
| Junior high/high school | 26.4% | 18.6% | 33.5% | 25.8% | 31.5% | |
| Two-year college | 26.0% | 24.7% | 25.0% | 25.1% | 30.4% | |
| Four-year college/graduate school | 47.6% | 56.7% | 41.5% | 49.1% | 38.1% | |
| Job status | < 0.001 | |||||
| Full-time job | 62.0% | 68.3% | 53.7% | 69.8% | 52.2% | |
| No full-time job | 38.0% | 31.7% | 46.3% | 30.2% | 47.8% | |
| Household income (yen p.a) | < 0.001 | |||||
| < 5 million | 38.0% | 31.3% | 41.6% | 36.9% | 45.9% | |
| 5-10 million | 46.5% | 50.4% | 42.8% | 48.1% | 42.7% | |
| > 10 million | 15.5% | 18.3% | 15.6% | 15.0% | 11.4% | |
| BMI | 0.182 | |||||
| Normal weight | 78.2% | 79.4% | 79.1% | 78.3% | 74.9% | |
| Overweight | 21.8% | 20.6% | 20.9% | 21.7% | 25.1% | |
| Mean BMI, kg/m2 (sd) | 22.59 (3.53) | 22.46 (3.25) | 22.51 (3.49) | 22.52 (3.50) | 22.99 (4.02) | |
Abbreviations: PA: physical activity; ST: screen time, p.a.: per annum.