Table 1.
Descriptive Characteristics of the Sample of Women (N = 121) From the Healthy Women Study
| Range | ||
|---|---|---|
| Age, mean (SD), y | 73.3 (1.7) | 68–77 |
| BMI, mean (SD), kg/m2 | 27.7 (5.1) | 18.5–45.1 |
| White, n (%) | 111 (91.7) | |
| Education, n (%) | ||
| High school or less | 28 (23.1) | |
| Some college | 23 (19.0) | |
| 4-y degree or higher | 70 (57.9) | |
| Hypertension, n (%) | 51 (42.2) | |
| Sleep medication use, n (%) | 16 (13.2) | |
| Beck Depression Inventory, median (IQR) | 5.0 (6.0) | 0–19 |
| Sleep | ||
| Actigraphy sleep time, mean (SD), min | 396.6 (53.3) | 234.9–499.6 |
| Actigraphy efficiency, mean (SD), % | 84.7 (6.2) | 66.6–98.2 |
| Diary sleep time, mean (SD), min | 420.0 (60.2) | 285.0–588.8 |
| Diary efficiency, mean (SD), % | 92.9 (5.8) | 67.3–99.5 |
| Physical activity | ||
| Accelerometer count average, median (IQR), ct·min−1·d−1 | 190.5 (91.1) | 59.3–594.1 |
| Accelerometer MVPA, median (IQR), min·d−1 | 61.9 (45.8) | 9.7–185.5 |
| Diary LTPA, median (IQR), min·d−1 | 49.3 (38.9) | 0.0–212.1 |
| Diary LTPA, median (IQR), MET·h·d−1 | 2.0 (2.4) | 0.0–100.1 |
| Cognitive function | ||
| Modified Mini-Mental State Examination, median (IQR)* | 97.0 (5.0) | 73–100 |
| Digit Symbol Substitution Test, mean (SD), # correct | 49.3 (9.9) | 21–73 |
| Trail Making Test A, median (IQR), s* | 36.0 (13.5) | 16–71 |
| Trail Making Test B, median (IQR), s | 80.0 (40.0) | 40–240 |
| Letter fluency (F + S), mean (SD), # correct | 28.26 (7.9) | 1–29 |
| Animal fluency, mean (SD), # correct | 17.74 (4.7) | 11–49 |
Notes: BMI = body mass index; IQR = interquartile range; LTPA = leisure-time physical activity; MET = metabolic equivalent; MVPA = moderate to vigorous intensity physical activity; SD = standard deviation.
*N = 120.