Table IV.
Specificity and sensitivity of different autonomic function tests
| Autonomic function tests | Specificity (%) | Sensitivity (%) |
|---|---|---|
| Pulse rate (Standing position) | 94.4 | 81 |
| Blood pressure mmHg (Supine position) | 86.1 | 36.2 |
| Palmar SSR amplitude (µV) | 75 | 74.1 |
| Palmar SSR Latency (msec) | 72.4 | 52.8 |
| Pulse rate (supine position) | 72.2 | 60.3 |
| pNN50% | 63.8 | 75 |
SSR: sympathetic skin response
PNN50: number of pairs of adjacent NN intervals differing by more than 50 msec in the entire recording divided by the total number of all NN intervals