Nerve conduction test results by triallate group
| Nerve conduction test values | All subjects | Hired 1976–85 | Hired >1985 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| No/low triallate | High triallate | p* | No/low triallate | High triallate | p* | No/low triallate | High triallate | p* | |
| *F test comparing the adjusted mean of the high triallate group with the adjusted mean of the no/low triallate group. | |||||||||
| †Adjusted for age, gender, and height using analysis of covariance. | |||||||||
| ‡One subject’s sural nerve test results excluded because of technical problems. | |||||||||
| §Two subjects excluded because of technical problems. | |||||||||
| ¶One subject excluded because of technical problems. | |||||||||
| Sural nerve peak amplitude (μV) | |||||||||
| n tested‡ | 50 | 49 | 25 | 24 | 25 | 25 | |||
| Range | 3.2–38.7 | 0–47.9 | 3.2–38.7 | 4.0–47.9 | 4.2–31.9 | 0.0–27.7 | |||
| Median | 11.6 | 10.0 | 11.2 | 9.8 | 14.7 | 10.9 | |||
| Mean (SD) | 15.2 (8.4) | 11.7 (7.3) | 0.03 | 14.4 (8.8) | 11.8 (8.8) | 0.31 | 16.0 (8.2) | 11.6 (5.8) | 0.04 |
| Mean, adjusted† | 15.1 | 11.8 | 0.04 | 13.7 | 12.5 | 0.65 | 15.6 | 12.0 | 0.07 |
| Sural nerve peak-to-peak amplitude (μV) | |||||||||
| n tested‡ | 50 | 49 | 25 | 24 | 25 | 25 | |||
| Range | 3.9–47.7 | 0–104.3 | 3.9–34.4 | 4.7–104.3 | 4.5–47.7 | 0.0–41.3 | |||
| Median | 11.8 | 11.9 | 11.2 | 12.0 | 15.1 | 11.8 | |||
| Mean (SD) | 16.2 (10.2) | 15.1 (15.0) | 0.66 | 14.0 (8.9) | 15.4 (19.4) | 0.76 | 18.4 (11.2) | 14.8 (9.3) | 0.22 |
| Mean, adjusted† | 16.2 | 15.1 | 0.69 | 12.9 | 16.6 | 0.39 | 18.1 | 15.1 | 0.33 |
| Sural nerve velocity (μV) | |||||||||
| n tested‡ | 50 | 49 | 25 | 24 | 25 | 25 | |||
| Range | 35.4–59.6 | 0.0–66.7 | 35.4–59.6 | 33.3–62.2 | 39.4–58.3 | 0.0–66.7 | |||
| Median | 49.1 | 49.1 | 49.1 | 49.6 | 49.1 | 48.3 | |||
| Mean (SD) | 48.9 (5.2) | 48.2 (9.3) | 0.68 | 48.5 (5.7) | 49.1 (6.6) | 0.71 | 49.2 (4.6) | 47.4 (11.4) | 0.45 |
| Mean, adjusted† | 48.9 | 48.2 | 0.62 | 48.8 | 48.9 | 0.95 | 48.8 | 47.8 | 0.68 |
| Peroneal nerve amplitude, ankle (mV) | |||||||||
| n tested§ | 50 | 48 | 25 | 23 | 25 | 25 | |||
| Range | 1.1–10.5 | 0.2–11.6 | 1.1–10.2 | 0.2–11.6 | 1.2–10.5 | 0.5–9.9 | |||
| Median | 4.6 | 4.2 | 3.9 | 4.2 | 4.8 | 4.2 | |||
| Mean (SD) | 4.8 (2.3) | 4.6 (2.6) | 0.78 | 4.8 (2.5) | 4.6 (2.7) | 0.80 | 4.8 (2.1) | 4.7 (2.6) | 0.90 |
| Mean, adjusted† | 4.8 | 4.6 | 0.78 | 4.8 | 4.6 | 0.74 | 4.7 | 4.7 | 0.99 |
| Peroneal nerve amplitude, fibular neck (mV) | |||||||||
| n tested¶ | 50 | 49 | 25 | 24 | 25 | 25 | |||
| Range | 0.5–9.4 | 0.4–11.6 | 0.5–9.4 | 0.4–11.6 | 1.7–8.1 | 0.6–9.1 | |||
| Median | 4.1 | 4.1 | 4.3 | 4.1 | 3.7 | 4.4 | |||
| Mean (SD) | 4.5 (2.1) | 4.5 (2.5) | 0.98 | 4.6 (2.2) | 4.6 (2.7) | 0.94 | 4.5 (1.9) | 4.5 (2.3) | 0.96 |
| Mean, adjusted† | 4.5 | 4.5 | 0.98 | 4.6 | 4.6 | 0.99 | 4.4 | 4.5 | 0.85 |
| Peroneal nerve velocity (m/s) | |||||||||
| n tested | 50 | 50 | 25 | 25 | 25 | 25 | |||
| Range | 38.7–55.6 | 36.5–56.1 | 38.7–53.9 | 39.2–56.1 | 40.3–55.6 | 36.5–53.3 | |||
| Median | 48.2 | 48.3 | 47.2 | 48.1 | 48.5 | 48.4 | |||
| Mean (SD) | 47.9 (4.1) | 47.9 (4.1) | 0.95 | 46.8 (4.2) | 48.0 (4.3) | 0.29 | 49.1 (3.7) | 47.7 (3.9) | 0.20 |
| Mean, adjusted† | 47.9 | 47.8 | 0.87 | 47.2 | 47.6 | 0.73 | 48.6 | 48.1 | 0.52 |