Table 1 Baseline characteristics of study participants.
From: Autonomic function and change in functional capacity in older adults: a longitudinal investigation
Characteristics | All participants (n = 542) |
|---|---|
Age, years | 70.1 (7.0) |
Women, n (%) | 252 (46.5) |
Education | |
Illiteracy, n (%) | 16 (3.0) |
Elementary school, n (%) | 169 (31.2) |
Junior high school | 61 (11.3) |
≥ High school, n (%) | 296 (54.6) |
Smoking | |
Never, n (%) | 392 (72.3) |
Former smoker, n (%) | 106 (19.6) |
Current smoker, n (%) | 44 (8.1) |
Leisure-time physical activity in the past year, n (%) | 408 (75.3) |
Body mass index, kg/m2 | 24.2 (3.4) |
Hypertension, n (%) | 303 (55.9) |
Diabetes mellitus, n (%) | 143 (26.4) |
Cardiovascular disease, n (%) | 150 (27.7) |
Stroke, n (%) | 30 (5.5) |
Lung disease, n (%) | 34 (6.3) |
Cancer, n (%) | 38 (7.0) |
Arthritis, n (%) | 131 (24.2) |
Chronic kidney disease, n (%) | 64 (11.8) |
Parkinson’s disease, n (%) | 2 (0.4) |
Heart rate, per minute | 65.7 (9.7) |
Standard deviation of all NN intervals, ms | 20.9 (15.0–29.1) |
Powers in low frequency, ms2 | 55.0 (24.7–132.6) |
Powers in high frequency, ms2 | 39.0 (16.8–89.9) |
Powers in low frequency/powers in high frequency ratio | 1.4 (0.7–2.9) |
Total power, ms2 | 290.0 (148.1–566.3) |
