Table 5.
Predictors of Death or HF Hospitalization (whichever came first) after an AMI
| Univariate Analysis | Multivariate Analysis | Sens./Spec. % | AUC | |||||
|---|---|---|---|---|---|---|---|---|
| HR | 95% CI | P | HR | 95% CI | P | |||
| Age (years) | 1.08 | (1.06–1.10) | <0.001 | 1.05 | (1.03–1.07) | <0.001 | ||
| EF (%) | 0.94 | (0.92–0.95) | <0.001 | 0.96 | (0.94–0.97) | <0.001 | ||
| Previous stroke | 3.86 | (2.47–6.04) | <0.001 | 2.38 | (1.50–3.79) | <0.001 | ||
| BNP (pg/mL) | 1.003 | (1.003–1.004) | <0.001 | 1.001 | (1.00–1.002) | 0.03 | 0.70 | |
| BNP ≥ 211 pg/mL | 4.33 | (2.72–6.91) | <0.001 | 1.84 | (1.09–3.10) | 0.02 | 22/94 | |
| SDNN (ms) | 0.99 | (0.98–0.99) | <0.001 | 0.99 | (0.98–0.998) | 0.01 | 0.64 | |
| SDNN ≤ 73 ms | 2.10 | (1.45–3.05) | <0.001 | 1.35 | (0.91–2.00) | 0.14 | 37/80 | |
| α1 | 0.10 | (0.06–0.19) | <0.001 | 0.16 | (0.08–0.33) | <0.001 | 0.68 | |
| α1≤ 1.04 | 3.31 | (2.28–4.80) | <0.001 | 2.26 | (1.51–3.39) | <0.001 | 35/87 | |
| TS (ms/NN) | 0.87 | (0.83–0.92) | <0.001 | 0.94 | (0.89–0.99) | 0.02 | 0.68 | |
| TS ≤ 1.29 ms/NN | 2.91 | (1.97–4.30) | <0.001 | 1.70 | (1.11–2.61) | 0.02 | 38/85 | |
| BRS (ms/mmHg) | 0.94 | (0.91–0.98) | 0.002 | 0.997 | (0.96–1.04) | 0.87 | 0.64 | |
| BRS ≤ 3.57 ms/mmHg | 1.83 | (1.16–2.87) | 0.009 | 0.99 | (0.61–1.61) | 0.98 | 34/81 | |
| BNP/SDNN | 1.25 | (1.18–1.32) | <0.001 | 1.15 | (1.06–1.25) | 0.001 | 0.70 | |
| BNP/SDNN ≥ 1.79 | 3.77 | (2.45–5.80) | <0.001 | 2.17 | (1.31–3.60) | 0.003 | 34/89 | |
| Heart rate | 1.03 | (1.01–1.05) | <0.001 | 1.02 | (1.004–1.04) | 0.02 | 0.59 | |
| Heart rate ≥ 72 | 2.02 | (1.40–2.92) | <0.001 | 1.76 | (1.20–2.56) | 0.004 | 32/84 | |
α1= short‐term scaling exponent; AUC = area under the curve in the receiver operator characteristics (ROC) curve analysis; EF = left ventricular ejection fraction; HR = hazards ratios obtained from the Cox regression; CI = confidence intervals; Sens./Spec. = sensitivity/specificity. Other abbreviations are same as in Table 2.