|
Table 1: Quantitative variables differences between carpal tunnel syndrome (CTS) group and control group. |
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|
Control group |
CTS group |
p |
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|
Mean ± SD |
95% CI |
Mean ± SD |
95% CI |
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|
Turns per second |
285.4 ± 21.4 |
274.4-296.4 |
281.0 ± 60.6 |
263.8-298.3 |
0.7 |
|
Mean amplitude of turns (μV) |
799.1 ± 199.7 |
696.4-901.7 |
314.4 ± 184.7 |
261.9-366.9 |
< 0.001* |
|
T/M ratio |
0.2 ± 0.1 |
0.19-0.25 |
0.6 ± 0.3 |
0.48-0.64 |
< 0.001* |
|
RMS (μV) |
1,385.9 ± 368.9 |
1,196.2-1,575.0 |
641.1 ± 340.1 |
544.5-737.7 |
< 0.001* |
|
Frequency (Hz) |
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|
Mean |
118.5 ± 10.4 |
113.1-123.8 |
127.2 ± 30.5 |
118.5-135.8 |
0.2 |
|
Median |
113.5 ± 13.7 |
106.5-120.6 |
132.8 ± 36.0 |
122.6-143.0 |
0.03* |
|
Peak |
104.1 ± 14.2 |
96.8-111.4 |
116.0 ± 35.1 |
106-126 |
0.1 |
|
Power (−dB) |
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|
Peak frequency |
10.3 ± 0.5 |
10.1-10.6 |
11.2 ± 1.1 |
10.8-11.5 |
0.003* |
|
500 Hz |
36.1 ± 2.2 |
35.0-37.2 |
32.2 ± 3.9 |
31.1-33.3 |
0.002* |
|
1,000 Hz |
48.6 ± 2.0 |
47.6-49.6 |
46.2 ± 2.6 |
45.5-46.9 |
0.001* |
|
95% CI = 95% confidence interval. RMS = root mean square amplitude. SD = standard deviation. T/M = turn/amplitude ratio. * Statistical significance. |
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