Table 3.
Characteristics of Enrolled Patients with ESRD (N = 60).
| Characteristic | Number |
|---|---|
| Sex | |
| Male (n) | 25 |
| Female (n) | 35 |
| Mean age (range) | 52.96 (26—80) |
| Plasma level | |
| Calcium (mg/dL) | 10.00 ± 1.03 |
| Phosphorous (mg/dL) | 5.33 ± 1.34 |
| iPTH (pg/mL) | 1216.16 ± 767.03 |
| Aerodynamic† | |
| MPT (s) | 13.39 ± 5.68 |
| s (s) | 14.57 ± 7.30 |
| z (s) | 14.80 ± 7.30 |
| Acoustic‡ | |
| F0 (Hz) | 177.99 ± 43.11 |
| Jitter (%) | 1.41 ± 0.84 |
| Shimmer (dB) | 0.38 ± 0.18 |
| NHR | 0.13 ± 0.03 |
iPTH, intact parathyroid hormone; F0, fundamental frequency; MPT, maximum phonation time; s, voiceless “s” produced without vibration of vocal folds; z, voiced “z” produced with vibration of vocal folds; NHR, noise-to-harmonics ratio.
†Aerodynamic parameters with stop watch.
‡Acoustic parameters in a Computerized Speech Laboratory.