Table 4.
Determinants of the LV mechanical delay indexes in stepwise regression
| Parameter | Ts-max, ms | Ts-sd, ms | Ts-sl, ms | Tε-sl, ms |
|---|---|---|---|---|
| R2 (%) | 17.9 | 19.3 | 23.5 | 6.23 |
| Adjusted R2 (%) | 16.2 | 17.6 | 22.7 | 5.23 |
| Partial regression coefficients | ||||
| Female (0, 1) | ||||
| β±SE | 22.6±5.87 | 10.21±2.39 | — | — |
| Partial r2 (%) | 4.19 | 5.18 | ||
| P-value | 0.0002 | <0.0001 | ||
| Age (+10 years) | ||||
| β±SE | 4.58±2.03 | 1.84±0.83 | 13.8±2.74 | 0.76±0.31 |
| Partial r2 (%) | 2.15 | 2.06 | 14.7 | 4.15 |
| P-value | 0.025 | 0.027 | <0.0001 | 0.047 |
| BMI (+1 kg/m2) | ||||
| β±SE | 2.79±0.70 | 1.21±0.29 | 4.30±0.92 | 2.15±1.05 |
| Partial r2 (%) | 5.54 | 6.02 | 8.71 | 2.08 |
| P-value | <0.0001 | <0.0001 | <0.0001 | 0.043 |
| HR (+10 bpm) | ||||
| β±SE | −10.5±2.9 | −4.29±1.18 | — | — |
| Partial r2 (%) | 6.03 | 5.99 | ||
| P-value | 0.0004 | 0.0003 |
Values are mutually adjusted partial regression coefficients ±SE. BMI, body mass index; HR, heart rate.
Variance inflation factor (VIF) did not exceed 1.12. Other abbreviations are listed in Table 2.