Table.
Baseline Characteristics of Participants Without Overt Cardiovascular Diseasea
| No. (%) of Patientsb | ||
|---|---|---|
| No Conduction Disease (n = 1625)c |
Left Anterior Fascicular Block (n = 39) |
|
| Age, mean (SD), y | 71.4 (5.0) | 74.9 (6.8)d |
| Male sex | 618 (38) | 25 (64)d |
| Body mass index, mean (SD)e | 25.1 (4.2) | 25.5 (4.2) |
| Systolic blood pressure, median (IQR), mm Hg | 122 (113–130) | 120 (114–128) |
| Race/ethnicityf | ||
| White | 1471 (91) | 33 (85) |
| Black | 147 (9) | 6 (15) |
| American Indian/Alaskan Native | 3 (<1) | 0 |
| Asian/Pacific Islander | 1 (<1) | 0 |
| Other | 3 (<1) | 0 |
| Annual income, $ | ||
| <25 000, No./total (%) | 820/1512 (54) | 23/37 (62) |
| 25 000–49 999 | 427 (28) | 10 (27) |
| ≥50 000 | 265 (17) | 4 (11) |
| Current smoker, No./total (%) | 235/1624 (14) | 6/39 (15) |
| No. of alcoholic beverages consumed/wk | ||
| 0, No./total (%) | 698/1617 (43) | 17/39 (44) |
| <1 | 331 (20) | 5 (13) |
| 1–6 | 329 (20) | 9 (23) |
| 7–13 | 133 (8) | 5 (13) |
| >14 | 126 (8) | 3 (8) |
Abbreviation: IQR, interquartile range.
The normally distributed continuous variables were compared using t tests. Nonnormally distributed variables were compared using the Wilcoxon rank sum test. Categorical variables were compared using the χ2 and Fisher exact tests.
Unless otherwise indicated.
Referent group.
Comparison with referent group yielded a P value of less than .05.
Calculated as weight in kilograms divided by height in meters squared.
Participants self-identified their race from the 5 investigator-specified categories listed. Race was assessed in the Cardiovascular Health Study to explore potential associations with cardiovascular disease. Race was included in this study as a potential confounder.