Table 1.
Characteristics of Study Population by LA Diameter/Height
| Characteristic | Bottom Four Quintiles LA Diameter/Height (1.29–2.56 cm/m) (n = 1509) |
Top Quintile LA Diameter/Height (2.57–3.55 cm/m) (n = 377) |
P Value† |
|---|---|---|---|
| Mean age, y (SD) | 58.8 (5.7) | 59.3 (5.7) | 0.16 |
| Female, % | 62.7 | 74.3 | <0.0001 |
| Current cigarette smoking, % | 20.3 | 17.1 | 0.35 |
| Diabetes, % | 21.3 | 29.1 | 0.001 |
| Hypertension, % | 57.5 | 74.3 | <0.0001 |
| Mean SBP, mm Hg (SD) | 130 (20) | 138 (22) | <0.0001 |
| Mean DBP, mm Hg (SD) | 77 (11) | 78 (11) | 0.09 |
| Mean BMI (SD) | 29.4 (5.7) | 34.6 (6.7) | <0.0001 |
| Mean total chol:HDL ratio (SD) | 4.00 (1.47) | 4.05 (1.23) | 0.47 |
| Median triglycerides, mg/dL (Q1, Q3) | 99.4 (73.9, 136.9) | 101.9 (75.9, 129.9) | 0.15 |
| Mean LA diameter/height, cm/m (SD) | 2.19 (0.24) | 2.78 (0.18) | <0.0001 |
| LV hypertrophy % | 26.5 | 61.1 | <0.0001 |
| Low LV ejection fraction (<50%) | 0.9 | 4.5 | <0.0001 |
†
χ2 test or t test, as appropriate.
Values are percentages or means (SD); for triglycerides the median (1st and 3rd quartiles) is given because of skewness of its distribution.
LA diameter/height indicates left atrial diameter indexed to height; SD, standard deviation; BMI, body mass index; HDL, high-density lipoprotein; LV, left ventricular.