Table 2. Relationships between the clinical test and NCT results.
| CTS n = 28 |
Non-CTS n = 14 |
p Value (affected vs. unaffected) | |
|---|---|---|---|
| Mean ± SD median |
Mean ± SD median |
||
| MMT APB-only | 4.51 ± 0.58 5.0 |
4.78 ± 0.42 5.0 |
0.224 |
| MMT FDI-only | 4.55 ± 0.75 5.0 |
4.78 ± 0.42 5.0 |
0.488 |
| MMT APB/FDI ratio | 1.01 ± 0.15 1.0 |
1.0 ± 0.09 1.0 |
0.88 |
| DYN APB-only |
11.46 ± 5.45
b
10.17 |
16.25 ± 5.36
c
16.02 |
0.01 a |
| DYN FDI-only |
14.10 ± 6.91
b
13.58 |
17.68 ± 5.90
c
17.12 |
0.106 |
| DYN APB/FDI ratio | 0.90 ± 0.42 0.83 |
0.98 ± 0.33 0.97 |
0.84 |
Abbreviations: APB, abductor pollicis brevis muscle indicating thenar strength; DYN, use of the dynamometer to evaluate thenar strength; FDI, first dorsal interosseous muscle indicating ulnar strength; MMT, manual muscle testing; NCT, nerve conduction testing; SD, standard deviation.
a
A significant relationship: dynamometer for thenar strength affected versus unaffected side.
Comparisons within the same hand:
b
DYN APB versus DYN FDI within Affected Hand: p = 0.007.
c
DYN APB versus DYN FDI within the unaffected hand: p = 0.28.
It is possible that we were underpowered to detect differences.