Table 2.
Overall Variables of the Subjects Based on Quartiles of LAVI
| LAVI, Quartiles (mL/m2) | F | P | ||||
|---|---|---|---|---|---|---|
| Quartile I <16.0 (n=103) | Quartile II 16.0–18.9 (n=104) | Quartile III 19.0–22.5 (n=104) | Quartile IV >22.5 (n=103) | |||
| Age (years) | 55.2±15.1 | 57.2±14.1 | 57.7±13.5 | 66.7±11.1a | 14.596 | <0.001 |
| BMI (kg/m2) | 22.4±2.8 | 23.7±3.1a | 24.0±2.8a | 24.6±3.0a | 10.854 | <0.001 |
| SBP (mmHg) | 120.5±13.0 | 123.8±12.0 | 126.6±12.8a | 131.6±10.3abc | 15.586 | <0.001 |
| DBP (mmHg) | 73.9±8.9 | 75.6±8.8 | 76.8±9.5 | 77.6±7.7a | 3.457 | 0.017 |
| TG (mmol/L) | 1.3±1.3 | 1.5±1.0 | 1.4±1.2 | 1.4±0.8 | 0.482 | 0.695 |
| TC (mmol/L) | 5.1±1.1 | 5.2±1.0 | 5.3±1.1 | 5.4±1.1 | 1.127 | 0.038 |
| HDL-C (mmol/L) | 1.7±0.4 | 1.6±0.4 | 1.6±0.4 | 1.6±0.4 | 1.043 | 0.374 |
| LDL-C (mmol/L) | 2.7±0.8 | 2.9±0.7 | 3.0±0.8 | 3.0±0.7 | 2.631 | 0.050 |
| FBG (mmol/L) | 5.6±0.5 | 5.5±0.5 | 5.6±0.5 | 5.6±0.5 | 0.348 | 0.791 |
| SCr (umol/L) | 63.0±13.5 | 65.7±15.1 | 62.9±14.1 | 66.0±15.0 | 1.399 | 0.243 |
| LA-AP-D (mm) | 30.5±2.4 | 33.5±2.6a | 34.8±2.3ab | 38.3±3.3abc | 152.681 | <0.001 |
| LA-SI-D (mm) | 42.0±3.6 | 45.2±2.6a | 47.5±3.2ab | 52.6±6.0abc | 123.683 | <0.001 |
| LA-ML-D (mm) | 34.2±3.2 | 37.4±2.5a | 39.6±2.4ab | 43.3±3.1abc | 188.477 | <0.001 |
| LAV (mL) | 23.0±3.7 | 29.7±3.7a | 34.3±3.6ab | 45.7±8.0abc | 361.453 | <0.001 |
| E (cm/s) | 74.3±17.6 | 74.3±16.4 | 76.4±18.9 | 72.4±18.3 | 0.909 | 0.437 |
| A (cm/s) | 69.2±17.9 | 72.3±18.2 | 75.8±17.7 | 83.0±20.5abc | 10.570 | <0.001 |
| E/A | 1.2±0.4 | 1.1±0.4 | 1.1±0.4 | 0.9±0.3abc | 7.105 | <0.001 |
| DT (ms) | 156.4±36.5 | 163.8±32.6 | 157.6±35.5 | 173.3±33.8ac | 5.146 | 0.002 |
| LVEF (%) | 62.2±4.3 | 63.1±4.9 | 62.9±4.5 | 62.1±5.1 | 1.155 | 0.327 |
| PR interval (ms) | 150.4±26.6 | 160.8±22.8a | 157.8±21.4 | 159.3±22.9a | 3.936 | 0.009 |
| RR interval (ms) | 873.3±116.6 | 901.2±117.1 | 908.1±131.3 | 939.6±132.3a | 4.923 | 0.002 |
| QT interval (ms) | 361.8±27.9 | 366.3±23.8 | 372.8±30.3a | 390.5±29.9abc | 20.76 | <0.001 |
| QTc interval (ms) | 388.8±28.6 | 289.6±27.1 | 393.2±30.9 | 404.6±28.4abc | 7.51 | <0.001 |
| Tpe interval (ms) | 71.7±14.7 | 73.0±14.5 | 74.1±14.1 | 77.0±13.4 | 2.61 | 0.051 |
| Tpec interval (ms) | 77.3±17.8 | 77.4±16.1 | 78.5±16.6 | 80.0±14.7 | 0.598 | 0.617 |
| Tpe/QT | 0.2±0.0 | 0.2±0.0 | 0.2±0.0 | 0.2±0.0 | 0.073 | 0.974 |
| Tpe/QTc | 0.2±0.0 | 0.2±0.0 | 0.2±0.0 | 0.2±0.0 | 0.900 | 0.441 |
Notes: Values are presented as mean ±standard deviation. a: P < 0.05 when compared with Quartile I; b: P < 0.05 when compared with Quartile II; c: P < 0.05 when compared with Quartile III.
Abbreviations: BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; TG, triglyceride; TC, total cholesterol; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; FBG, fasting blood glucose; SCr, serum creatinine; LA-AP-D, left atrial anterior-posterior diameter; LA-ML-D, left atrial medial-lateral diameter; LA-SI-D, left atrial superior-inferior diameter; LAV, left atrial volume; LAVI, left atrial volume index; E, early diastolic inflow velocity; A, late diastolic inflow velocity; DT, E-wave deceleration time; LVEF, left ventricular ejection fraction. QTc, heart rate corrected QT interval according to the Bazett formula; Tpe, Tpeak-to-Tend; Tpec, heart rate corrected Tpe interval according to the Bazett formula.