Table 1.
Baseline Characteristics of FHS Participants by Heart Rate Quartile
| Heart Rate Quartile | ||||
|---|---|---|---|---|
| Q1 (n=918) | Q2 (n=1077) | Q3 (n=998) | Q4 (n=1065) | |
| Age, y | 52 (12) | 54 (13) | 56 (13) | 59 (15) |
| Women, n (%) | 491 (53) | 626 (58) | 586 (59) | 586 (55) |
| Systolic blood pressure, mm Hg | 124 (20) | 128 (19) | 129 (20) | 135 (21) |
| Diastolic blood pressure, mm Hg | 76 (10) | 78 (10) | 79 (10) | 81 (11) |
| Heart rate, beats per minute | 52 (4) | 61 (2) | 68 (3) | 80 (8) |
| Body mass index, kg/m2 | 25.6 (3.9) | 26.2 (4.4) | 26.9 (5.0) | 27.4 (5.3) |
| Antihypertensive treatment, n (%) | 81 (9) | 120 (11) | 140 (14) | 229 (22) |
| Diabetes mellitus, n (%) | 13 (1) | 33 (3) | 44 (4) | 96 (9) |
| Current smoker, n (%) | 146 (16) | 240 (22) | 248 (25) | 304 (29) |
| Left ventricular hypertrophy, n (%) | 9 (1) | 9 (1) | 22 (2) | 19 (2) |
| Valvular heart disease, n (%) | 7 (1) | 8 (1) | 14 (1) | 43 (4) |
| Physical activity index | 37 (7) | 37 (7) | 36 (7) | 36 (7) |
| Total cholesterol, mg/dL | 200 (38) | 206 (37) | 208 (38) | 212 (41) |
| HDL cholesterol, mg/dL | 53 (14) | 52 (15) | 50 (15) | 48 (16) |
Values are means (SD) unless otherwise specified. Heart rate cut‐offs for men are: 25th percentile=55 bpm, 50th percentile=61 bpm, 75th percentile=69 bpm; for women: 25th percentile=59 bpm, 50th percentile=65 bpm, 75th percentile=74 bpm. FHS indicates Framingham Heart Study; HDL, high‐density lipoprotein.