Table 1.
Baseline sample characteristics in total and by physical activity category
| Variable | Overall N = 7,6851 |
0 Minutes N = 22851 |
> 0 Minutes to < = 150 Minutes N = 25851 |
> 150 Minutes N = 28151 |
p-value2 |
|---|---|---|---|---|---|
| Age | 72.2 (6.2) | 72.6 (6.7) | 72.4 (6.3) | 71.7 (5.6) | < 0.001 |
| Education | 12.4 (3.5) | 11.6 (3.4) | 12.4 (3.5) | 13.1 (3.6) | < 0.001 |
| Medical Conditions | 1.11 (0.98) | 1.23 (1.03) | 1.11 (0.98) | 1.01 (0.93) | < 0.001 |
| CESD-10 | 1.46 (1.93) | 1.98 (2.21) | 1.41 (1.88) | 1.08 (1.59) | < 0.001 |
| Global cognition | 0.30 (0.70) | 0.15 (0.78) | 0.30 (0.67) | 0.41 (0.62) | < 0.001 |
| Episodic Memory | 0.29 (0.83) | 0.17 (0.91) | 0.29 (0.80) | 0.39 (0.76) | < 0.001 |
| Perceptual Speed | 0.35 (0.93) | 0.17 (0.93) | 0.36 (0.92) | 0.50 (0.91) | < 0.001 |
| Neuroticism | 5.35 (2.27) | 5.77 (2.38) | 5.34 (2.26) | 5.01 (2.12) | < 0.001 |
| Physical Activity (minutes) | 75 (0, 240) | 0 (0, 0) | 60 (30, 105) | 345 (225, 540) | < 0.001 |
| Study Time (years) | 6.9 (3.5, 9.6) | 6.5 (3.4, 9.3) | 7.1 (3.5, 9.8) | 7.0 (3.6, 10.1) | < 0.001 |
| Female | 4,803 (62%) | 1,638 (72%) | 1,670 (65%) | 1,495 (53%) | < 0.001 |
| African American | 4,929 (64%) | 1,723 (75%) | 1,670 (65%) | 1,536 (55%) | < 0.001 |
CESD-10 Modified Center for Epidemiologic Studies-Depression Scale
1Mean (SD); Median (IQR); n (%)
2One-way ANOVA; Kruskal–Wallis Rank Sum test; Pearson’s Chi-squared test