Table 1.
Descriptive statistics of study subjects
| Variable | Numbera | Number (%) in specific category | Mean (SD) | Median (25th–75th percentile) |
|---|---|---|---|---|
| Finger pain | 133 | 113 (85)b | 6 (4–8) | |
| Hand pain | 133 | 101 (76)b | 5 (1–7) | |
| CPT median 5 Hz (mAmp) | 134 | 175 (97–250)c | ||
| CPT median 250 Hz | 134 | 219 (160–290) | ||
| CPT median 2000 Hz | 134 | 500 (450–600) | ||
| CPT ulnar 5 Hz | 134 | 175 (97–250) | ||
| CPT ulnar 250 Hz | 134 | 202 (146–290) | ||
| CPT ulnar 2000 Hz | 134 | 450 (370–550) | ||
| CTS | 132 | 57 (43) | ||
| Ulnar neuropathy | 133 | 18 (14) | ||
| SNS | 134 | |||
| 0 | 12 (9) | |||
| 1 | 90 (67) | |||
| ≥2 | 32 (24) | |||
| SVS | 134 | |||
| 0 | 14 (10) | |||
| 1 | 19 (14) | |||
| 2 | 36 (27) | |||
| ≥3 | 65 (49) | |||
| Grip strength | 132 | 36.8 (12.6) | ||
| Age (years) | 134 | 48.3 (10.7) |
a
Number of all variables was not 134 due to a small number of missing values.
b
Number (percent) reporting any pain (Borg Scale score ≥ 1).
c
The threshold for current perception in healthy individuals varies by current frequency. The upper range of normal by CPT frequency is as follows: 5 Hz: 104 mAmp; 250 Hz: 183 mAmp; 2000 Hz: 401 mAmp.