Table 2.
Univariate and Multivariate Regression Analysis for Evaluating the Predictors of Appropriate ICD Shocks
| Univariate | Multivariate | |||
|---|---|---|---|---|
| Parameters | HR (CI 95 %) | P | HR (CI 95 %) | P |
| Age, years | 0.99 (0.97–1.21) | 0.156 | – | – |
| Male gender | 1.04 (0.72–1.27) | 0.244 | – | – |
| No. leads with fQRS | 1.58 (1.36–1.83) | <0.001 | 1.35 (−1.22–1.67) | 0.001 |
| Presence of fQRS | 7.54 (4.08–13.9) | <0.001 | 6.64 (3.54–12.4) | <0.001 |
| QRS duration, msec | 1.02 (1.0–1.03) | 0.001 | 1.06 (0.99–1.02) | 0.106 |
| LVEF, % | 0.98 (0.95–1.02) | 0.258 | – | – |
| Ischemic etiology | 3.21 (2.85–3.58) | <0.001 | 3.04 (2.93–3.15) | <0.001 |
CI = confidence interval; fQRS = fragmentation of QRS complex; ICD = implantable cardioverter defibrillator; HR = hazard ratio; msec = milliseconds; No. = number of.