Table 2.
Baseline characteristics of 4657 participants by sudden cardiac death status.
| Characteristic | No SCD (n=4,436) | SCD (n=221) | p-value* |
|---|---|---|---|
| Age (Y) | 74.8±5.3 | 75.8±5.5 | 0.005 |
| Body mass index (kg/m2) | 26.9±4.8 | 27.2±4.3 | 0.37 |
| Waist circumference (cm) | 97.4±13.3 | 99.4±12.1 | 0.03 |
| Male | 1813 (40.9) | 127 (57.5) | <0.001 |
| African-American | 724 (16.3) | 43 (19.5) | 0.22 |
| Physical activity (kcal/week) | 1423.6±1736.8 | 1425.1±1986.4 | 0.99 |
| HDL-cholesterol (mg/dl) | 53.4±14.4 | 49.9±48.1 | <0.001 |
| LDL-cholesterol (mg/dl) | 127.3±33.9 | 129.5±35.9 | 0.36 |
| Triglycerides (mg/dl) | 144.2±85.2 | 149.7±93.6 | 0.36 |
| Prevalent diabetes | 642 (14.7) | 58 (26.6) | <0.001 |
| Hypertension | 2504 (62.9) | 139 (76.8) | <0.001 |
| Hypertension medication | 2219 (50.1) | 144 (65.2) | <0.001 |
| Lipid-lowering medication | 334 (7.5) | 18 (8.1) | 0.74 |
| Statin | 207 (4.7) | 10 (4.5) | 0.92 |
| Diabetes medication | 390 (8.8) | 34 (15.4) | 0.001 |
| Prevalent CHD | 924 (20.8) | 90 (40.7) | <0.001 |
| Prevalent CHF | 246 (5.6) | 34 (15.4) | <0.001 |
| Health status | |||
| Excellent | 292 (6.6) | 13 (5.9) | |
| Very good | 1392 (31.4) | 49 (22.2) | |
| Good | 1838 (41.4) | 104 (47.1) | |
| Fair | 817 (18.4) | 48 (21.7) | |
| Poor | 97 (2.2) | 7 (3.2) | 0.05 |
| Smoking status | |||
| Never smoker | 2034 (45.9) | 80 (36.2) | |
| Former smoker | 1964 (44.3) | 112 (50.7) | |
| Current smoker | 438 (9.9) | 29 (13.1) | 0.01 |
| Alcohol consumption | |||
| None | 2425 (54.7) | 125 (56.6) | |
| <7 drinks/week | 1456 (32.8) | 72 (32.6) | |
| 7+ drinks/week | 555 (12.5) | 24 (10.9) | 0.60 |
*
Differences in characteristics between SCD and non-SCD groups were tested using a t-test for normally distributed continuous variables; the Wilcoxon rank-sum test for continuous variables with skewed distributions; and the chi-square test for categorical variables.