Table 2.
Baseline participant characteristics by randomized intervention group
| Physical activity (n = 669) |
Health education (n = 672) |
|
|---|---|---|
| Age in years, mean(SD) | 78.5 (5.3) | 78.9 (5.2) |
| Female, n(%) | 431 (64.4) | 461 (68.6) |
| Non-Hispanic White, n(%) | 497 (74.3) | 520 (77.4) |
| College or higher education, n(%) | 417 (62.3) | 430 (64.0) |
| Body mass index (kg/m2), mean(SD) | 30.2 (5.8) | 30.5 (6.3) |
| Smoked 100+ cigarettes ever, n(%) | 339 (50.7) | 297 (44.2) |
| Modified Mini-Mental State Examination scorea, mean(SD) | 91.7 (5.4) | 91.7 (5.3) |
| Sought medical advice for depression in past 5 years, n(%) | 97 (14.5) | 85 (12.7) |
| Comorbidities > 2, n(%) | 172 (25.7) | 177 (26.3) |
| Short Physical Performance Battery score < 8b, n(%) | 286 (42.8) | 309 (46.0) |
| 400 meter walk < 0.8 m/sec, n(%) | 271 (40.5) | 296 (44.1) |
| Wear days, mean(SD) | 8.0 (3.3) | 7.9 (3.1) |
| Wear minute/day, mean(SD) | 839.1 (112.7) | 835.0 (109.4) |
| Minutes/day ≥ 760 counts, mean(SD) | 27.6 (22.8) | 27.9 (25.9) |
a
score range: 0–100 where higher scores indicate better performance
b
score range: 0–12 where higher scores indicate better performance; scoring < 8 indicates poor functioning