Table 3.
Characteristics of the outcome and exposure variables in the eligible populationa
| All | Subclinical Atherosclerosisb | No Subclinical Atherosclerosisc | Statistical Significanced |
|
|---|---|---|---|---|
| Ankle Brachial Index (ABI) | – | 3.4 (2.9–4.0) | 96.6 (95.9–97.1) | |
| Framingham Risk Score | ||||
| Low risk (< 10%) | 59.1 (57.8–60.4) | 53.1 (0.45–61.4) | 59.3 (58.0–60.6) | § |
| Intermediate risk (10%–20%) | 32.1 (30.6–33.5) | 27.5 (20.1–36.4) | 32.2 (30.7–33.7) | |
| High risk (> 20%) | 8.9 (8.0–9.8) | 19.4 (14.0–26.4) | 8.5 (7.7–9.3) | |
| Metabolic Syndrome | ||||
| No | 75.0 (73.9–76.6) | 62.8 (54.5–70.4) | 75.4 (73.7–77.0) | § |
| Yes (3 or more components) | 25.0 (23.4–26.7) | 37.2 (29.6–45.5) | 24.6 (23.0–26.3) | |
| Cardiovascular Health Indexe | ||||
| Optimum overall health (12–14 points) | 12.0 (10.3–13.9) | 4.4 (1.5–12.5) | 13.2 (11.5–15.2) | |
| Average overall health (8–11 points) | 75.7 (73.9–77.4) | 79.8 (72.7–85.4) | 75.2 (73.3–77.0) | |
| Inadequate overall health (0–7 points) | 12.3 (11.0–13.7) | 15.8 (11.5–21.4) | 11.6 (10.3–13.0) | § |
aProportion estimates of the eligible population after applying sampling weights to the study sample (% (95% CI))
bDefined as borderline ABI (0.91–0.99)
cDefined as normal ABI (1.00–1.39)
dPearson’s chi squared test for comparing differences in proportions between normal ABI and borderline ABI
eCategorization criteria and scoring for the Cardiovascular Health Index is described in Table 1
§Indicates statistical significance at the p < 0.05 level