Table 3.
Cardiovascular Events and Hazard Ratios, According to Quartile of Cholesterol Efflux Capacity.*
| End Point | All Participants (N = 2416) | Cholesterol Efflux Capacity | Unadjusted Hazard Ratio (95% CI) | Adjusted Hazard Ratio (95% CI)† | |||
|---|---|---|---|---|---|---|---|
| Quartile 1 (N = 602) | Quartile 2 (N = 605) | Quartile 3 (N = 607) | Quartile 4 (N = 602) | ||||
| no. of participants | |||||||
| Primary end point: atherosclerotic cardiovascular disease | 132 | 49 | 35 | 26 | 22 | 0.44 (0.27–0.73) | 0.33 (0.19–0.55) |
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| Myocardial infarction‡ | 28 | 11 | 6 | 4 | 7 | — | — |
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| Stroke‡ | 36 | 15 | 11 | 8 | 2 | — | — |
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| Coronary revascularization‡ | 26 | 14 | 7 | 2 | 3 | — | — |
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| Death from cardiovascular causes‡ | 42 | 9 | 11 | 12 | 10 | — | — |
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| Secondary end points | |||||||
|
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| Total cardiovascular disease | 172 | 58 | 44 | 39 | 31 | 0.52 (0.34–0.80) | 0.42 (0.27–0.65) |
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| Hard atherosclerotic cardiovascular disease | 84 | 30 | 21 | 16 | 17 | 0.53 (0.29–0.97) | 0.40 (0.21–0.74) |
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| Myocardial infarction | 30 | 12 | 6 | 5 | 7 | 0.59 (0.23–1.49) | 0.44 (0.17–1.18) |
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| Stroke | 37 | 16 | 11 | 8 | 2 | 0.12 (0.03–0.54) | 0.11 (0.02–0.47) |
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| Coronary revascularization | 48 | 25 | 10 | 6 | 7 | 0.28 (0.12–0.65) | 0.19 (0.08–0.45) |
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| Death from cardiovascular causes | 46 | 9 | 15 | 12 | 10 | 1.11 (0.45–2.74) | 0.94 (0.37–2.37) |
Data are hazard ratios and 95% confidence intervals for the cholesterol efflux capacity in quartile 4 (highest quartile) as compared with quartile 1 (lowest quartile) for the listed end points, obtained from Cox proportional-hazards models. Atherosclerotic cardiovascular disease was defined as the composite of a first nonfatal myocardial infarction, nonfatal stroke, or coronary revascularization (percutaneous coronary intervention or coronary-artery bypass grafting) or death from cardiovascular causes. Total cardiovascular disease was defined as the composite of the end points related to atherosclerotic cardiovascular disease and peripheral revascularization or hospitalization for heart failure or atrial fibrillation. Hard atherosclerotic cardiovascular disease was defined as the composite of fatal or nonfatal myocardial infarction or stroke.
The hazard ratio was adjusted for age, sex, race, presence or absence of diabetes, presence or absence of hypertension, status with regard to current smoking, body-mass index, total cholesterol level, log-transformed triglyceride level, status with regard to a history of statin use, HDL cholesterol level, and HDL particle concentration.
The components of the primary composite end point are summarized as mutually exclusive components without hazard ratios or confidence intervals, since these components do not represent true event rates. Total numbers of patients with these end-point events are also shown as secondary end points with hazard ratios and confidence intervals.