Table 1. Baseline characteristics in 1994–1995 of participants by quartile of CCA IMT change rate between 1994–1995 and 1999–2000*.
| Total | Range of quartiles (rate-of-change per year, mm) |
|||||
|---|---|---|---|---|---|---|
| Q1, <−0.008 | Q2, −0.008 to <0.016 | Q3, 0.016 to <0.036 | Q4, >=0.036 | P value | ||
| n = 1398 | n = 348 | n = 355 | n = 347 | n = 348 | ||
| Men, % | 43.9 | 46.3 | 45.4 | 39.5 | 44.3 | 0.28 |
| Age, years | 55.9±10.5 | 58.5 ± 10.7 | 55.2 ± 10.6 | 54.0 ± 10.1 | 55.8 ± 10.1 | <0.001 |
| Current smoker, yes, % | 23.3 | 24.6 | 23.8 | 23.6 | 21.3 | 0.76 |
| Alcohol drinking, yes, % | 22.7 | 20.4 | 23.7 | 23.7 | 23.1 | 0.69 |
| Education level, <9 year, % | 93.1 | 94.0 | 90.4 | 94.2 | 93.7 | 0.16 |
| Body mass index, kg/m2 | 24.2 ± 3.3 | 24.2 ± 3.6 | 24.1 ± 3.4 | 24.6 ± 3.4 | 24.2 ± 3.0 | 0.30 |
| Waist circumference, cm | 82.3 ± 9.8 | 83.0 ± 10.1 | 81.9 ± 9.5 | 82.1 ± 10.2 | 82.3 ± 9.4 | 0.50 |
| Family history of coronary events, yes, % | 10.3 | 8.6 | 7.9 | 13.5 | 11.2 | 0.056 |
| Hypertension, yes, % | 27.9 | 31.4 | 24.7 | 23.6 | 31.8 | 0.027 |
| Diabetes, yes, % | 15.6 | 15.8 | 15.3 | 16.4 | 14.9 | 0.95 |
| Fasting glucose, mg/dL | 110.2 ± 28.3 | 109.8 ± 22.8 | 108.8 ± 28.2 | 110.6 ± 32.3 | 111.7 ± 29.3 | 0.61 |
| Systolic blood pressure, mmHg | 123.6 ± 17.4 | 124.9 ± 18.0 | 122.6 ± 17.1 | 121.2 ± 16.7 | 125.5 ± 17.5 | 0.004 |
| Diastolic blood pressure, mmHg | 75.9 ± 11.5 | 76.3 ± 11.4 | 75.2 ± 11.3 | 75.6 ± 11.9 | 76.6 ± 11.3 | 0.42 |
| High density lipoprotein cholesterol, mg/dL | 41.0 ± 11.0 | 40.2 ± 11.0 | 42.3 ± 11.4 | 41.6 ± 10.4 | 40.0 ± 11.0 | 0.016 |
| Low density lipoprotein cholesterol, mg/dL | 128.7 ± 36.8 | 130.2 ± 36.4 | 124.2 ± 36.6 | 128.6 ± 39.0 | 131.6 ± 34.7 | 0.054 |
| Total cholesterol, mg/dL | 206.0 ± 43.9 | 204.9 ± 44.4 | 202.0 ± 43.5 | 207.1 ± 44.8 | 209.9 ± 42.6 | 0.11 |
| Triglycerides, mg/dL | 106.9 ± 93.5 | 106.4 ± 80.4 | 99.9 ± 79.5 | 107.5 ± 95.7 | 113.7 ± 114.0 | 0.29 |
| CCA IMT in 1994–1995, mm | 0.69 ± 0.19 | 0.85 ± 0.21 | 0.69 ± 0.14 | 0.62 ± 0.13 | 0.62 ± 0.17 | <0.001 |
| CCA IMT in 1999–2000, mm | 0.77 ± 0.20 | 0.67 ± 0.17 | 0.71 ± 0.14 | 0.75 ± 0.13 | 0.93 ± 0.25 | <0.001 |
Abbreviations: CCA IMT, common carotid artery intima-media thickness.
*Values are mean ± s.d. (standard deviation) unless otherwise indicated.