Table 1.
Baseline Characteristics of the Study Cohort by Sex and Walking Behavior.
| Men |
Women |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Characteristic | Total (N = 1480) | Walker (N = 861) | Nonwalker (N = 619) | Total (N = 1576) | Walker (N = 777) | Nonwalker (N = 799) | ||||
| Age, y | 73.8 ± 2.9 | 73.8 ± 2.9 | 73.7 ± 2.9 | 73.5 ± 2.9 | 73.5 ± 2.9 | 73.5 ± 2.9 | ||||
| Black race, No. (%) | 546 (36.9) | 271 (31.5) | 275 (44.4) | 726 (46.1) | 290 (37.3) | 436 (54.6) | ||||
| Memphis site, No. (%) | 743 (50.2) | 397 (46.1) | 346 (55.9) | 793 (50.3) | 356 (45.8) | 437 (54.7) | ||||
| High school graduate, No. (%) | 1078 (72.8) | 645 (74.9) | 432 (69.8) | 1209 (76.8) | 644 (82.9) | 566 (70.9) | ||||
| Current or recent smoker, No. (%) | 498 (33.8) | 265 (30.8) | 235 (37.9) | 411 (26.2) | 189 (24.3) | 224 (28.1) | ||||
| Obese, No. (%) | 317 (21.4) | 172 (20.0) | 145 (23.4) | 462 (29.3) | 176 (22.7) | 286 (35.8) | ||||
| Nonwalker, No. (%) | 619 (41.8) | 799 (50.7) | ||||||||
| Reports walking 1 mile is very easy, No. (%) | 786 (55.0) | 523 (60.8) | 293 (47.3) | 575 (37.8) | 387 (49.8) | 217 (27.2) | ||||
| Usual gait speed, m/s | 1.23 ± 0.25 | 1.26 ± 0.24 | 1.20 ± 0.24 | 1.12 ± 0.22 | 1.16 ± 0.22 | 1.08 ± 0.21 | ||||
| Gait speed ≥1.0 m/s, No. (%) | 1258 (85.0) | 742 (86.2) | 516 (83.4) | 1117 (70.9) | 599 (77.1) | 518 (64.8) | ||||
Note: Nonwalkers reported walking a total of <30 minutes in a typical week. Plus–minus values are means ± standard deviations. Race was self-determined. Recent smoker includes former smokers who quit after the age of 50 years. Obesity is defined as a body mass index calculated as weight in kilograms divided by height in meters squared that exceeds 30.