Table 3.
Sensitivity, Specificity, and Predictive Value of ROC area of the HRV indices to assess the presence of CAD
| Variable/Cutoff | Sens | Sp | PPV | NPV | Area under ROC curve | p |
Odds Ratio (IC 95%) |
|---|---|---|---|---|---|---|---|
|
HF ≤ 65 (ms2) |
58% |
81% |
49% |
39% |
0.708 |
0.0037 |
5.90 (1.7-20.53) |
|
RMSSD ≤ 24.55 (ms) |
70% |
67% |
81% |
52% |
0.667 |
0.0076 |
4.62 (1.51-14.1) |
|
NN50 ≤ 15.54 (count) |
51% |
81% |
85% |
45% |
0.653 |
0.0164 |
4.45 (1.16-20.7) |
| -ApEn ≤ 0.296 | 40% | 90% | 89% | 42% | 0.666 | 0.0188 | 6.21 (1.28-30.17) |
Sens = sensitivity, Sp = specificity, PPV = positive predictive value, NPV = negative predictive value.