Table 1. Baseline Characteristics of CARDIA Participants by Race*.
| Black (n = 2,038) | White (n = 2,163) | P value† | |
|---|---|---|---|
| Age, years, mean ± SD | 29 (4) | 30 (3) | < 0.001 |
| Male Gender, n (%) | 872 (43) | 1,023 (47) | 0.003 |
| Active Smoker, n (%) | 699 (34) | 498 (23) | < 0.001 |
| Alcohol Consumption, drinks/week, median (IQR) | 0 (0–5) | 2 (0–6) | < 0.001 |
| Body Mass Index, kg/m2, mean ± SD | 27.4 (6.7) | 24.9 (4.7) | < 0.001 |
| Heart Rate, beats/minute, mean ± SD | 69 (10) | 68 (10) | 0.03 |
| Systolic Blood Pressure, mm Hg, mean ± SD | 110 (12) | 106 (11) | < 0.001 |
| Antihypertensive Treatment, n (%) | 52 (3) | 16 (1) | < 0.001 |
| Ejection Fraction, %, mean ± SD | 63 (7) | 63 (6) | 0.32 |
| Left Ventricular Mass, grams, mean ± SD | 153 (46) | 146 (43) | < 0.001 |
* Data describes the 4,201 participants who underwent the Year 5 echocardiographic examination with analyzable LA diameter data.
† P values are for the comparison of the indicated characteristic in Black versus White participants.
IQR, interquartile range; SD, standard deviation.