Table 3.
Associations between walking volume and hypertension stratified on baseline subgroups.
| Characteristic | Cases (rate*) | HR† (95% CI) | P Interaction |
|---|---|---|---|
| All women (83,435) | 38,230 (42.2) | 0.95 (0.94, 0.97) | --- |
| Age, years | <0.001 | ||
| 50–59 (n = 32,286) | 13,478 (35.3) | 0.94 (0.93–0.96) | |
| 60–69 (n = 34,979) | 16,934 (45.8) | 0.97 (0.96–0.98) | |
| ≥ 70 (n = 12,969) | 6,328 (53.5) | 0.99 (0.96–1.01) | |
| Race-ethnicity | 0.172 | ||
| White (n = 69,732) | 31,755 (41.1) | 0.95 (0.94–0.96) | |
| Black (n = 4,320) | 2,392 (64.7) | 0.99 (0.96–1.03) | |
| Hispanic (n = 3,050) | 1,313 (47.1) | 1.02 (0.97–1.07) | |
| Asian/Pacific Islander (n = 2,025) | 782 (38.6) | 1.01 (0.95–1.09) | |
| Systolic BP (tertiles), mmHg | 0.185 | ||
| ≤ 112.0 (n = 26,868) | 7,431 (21.5) | 0.96 (0.94–0.99) | |
| 112.5–124.0 (n = 27,537) | 12,914 (43.0) | 0.97 (0.95–0.99) | |
| ≥ 124.5 (n = 25,755) | 16,356 (73.4) | 0.97 (0.95–0.98) | |
| Diastolic BP (tertiles), mmHg | 0.713 | ||
| ≤ 69.0 (n = 26,865) | 9,498 (29.7) | 0.97 (0.95–0.99) | |
| 69.5–76.0 (n = 27,788) | 12,413 (40.5) | 0.96 (0.94–0.98) | |
| ≥ 76.5 (n = 25,496) | 14,781 (60.9) | 0.96 (0.94–0.97) | |
| BMI, kg/m2 | 0.820 | ||
| <18.5 (n = 1,575) | 566 (31.2) | 0.95 (0.88–1.03) | |
| 18.5–24.9 (n = 33,760) | 13,007 (32.7) | 0.99 (0.98–1.01) | |
| 25.0–29.9 (n = 27,957) | 13,571 (45.9) | 0.97 (0.95–0.98) | |
| ≥ 30 (n = 16,942) | 9,596 (60.4) | 0.99 (0.97–1.01) | |
| Non-walking PA, MET-hr/wk | 0.011 | ||
| 0 (n = 26,414) | 12,612 (46.2) | 0.94 (0.93–0.96) | |
| >0–9.3 (n = 27,051) | 12,562 (42.9) | 0.96 (0.94–0.98) | |
| > 9.3 (n = 26,769) | 11,566 (38.0) | 0.98 (0.96–0.99) | |