Table 1.
Median classification performance of the 100 five-fold cross validation balanced with bootstrapping.
| Feature combination | Median accuracy ± IQR (%) | Median sensitivity (%) | Median specificity (%) |
|---|---|---|---|
| Hs | 84.2 ± 5.8 | 100.0 | 78.3 |
| SQI2,Hs ‡ | 85.8 ± 5.0 | 93.3 | 80.0 |
| SQI2,PSD,Hs | 85.8 ± 5.0 | 83.3 | 90.0 |
| SQI2,SQI4,PSD,Hs | 85.0 ± 8.3 | 85.8 | 88.3 |
| SQI1,SQI2,SQI4,PSD,Hs | 84.7 ± 5.0 | 85.0 | 86.7 |
| SQI1,SQI2,SQI3,SQI4,PSD,Hs | 83.8 ± 6.7 | 81.7 | 86.7 |
IQR indicates inter-quartile range; ‡ indicates a significant improvement (Wilcoxon rank-sum test, P < 0.05) of a given feature combination compared to using a combination with one less feature.