Table 1.
Characteristics of study participants
| Variable | Min | Max | Mean | (SD) | N |
|---|---|---|---|---|---|
| Age in 2001, years | 24.00 | 39.00 | 30.89 | 4.92 | 81 |
| Baseline brachial diameter, mm | 2.36 | 5.32 | 3.53 | 0.62 | 74 |
| Flow-mediated dilatation, FMD, % | -0.26 | 23.43 | 6.78 | 5.00 | 74 |
| Carotid intima-media thickness, IMT, mm | 0.43 | 0.96 | 0.59 | 0.09 | 81 |
| Baseline HR, bpm | 46.30 | 94.48 | 71.63 | 9.30 | 75 |
| Baseline RSA, log ms2 | 2.17 | 3.30 | 2.84 | 0.23 | 76 |
| Baseline PEP, ms | 74.00 | 128.67 | 96.94 | 11.17 | 75 |
| HR reactivity score, bpm | -4.23 | 46.28 | 16.33 | 10.74 | 72 |
| RSA reactivity score, log ms2 | -0.88 | 0.34 | -0.11 | 0.24 | 73 |
| PEP reactivity score, ms | -44.33 | 5.30 | -14.80 | 10.65 | 70 |
| HR recovery score, bpm | -14.02 | 12.37 | -2.03 | 4.84 | 71 |
| RSA recovery score, log ms2 | -0.49 | 0.64 | 0.01 | 0.18 | 72 |
| PEP recovery score, ms | -17.33 | 17.00 | 2.20 | 6.27 | 70 |
HR = heart rate (bpm); RSA = respiratory sinus arrhythmia (log ms2); PEP = pre-ejection period (ms).