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Characteristics of human participants
| Control (n=40) | Chronic pain (n=30) | P value (group effect) | |
|---|---|---|---|
| Gender, males/females | 16/24 | 14/16 | - |
| Age (years) | 48.8±1.6 | 53.9±3.1 | 0.1148 |
| Education (years) | 10.0±0.4 | 9.9±0.6 | 0.9089 |
| Disease duration (months) | N/A | 43.7±17.7 | - |
| Pain index-NRS | N/A | 6.0±0.2 | - |
N/A: not applicable. Data are expressed as the number of patients, mean, and SEM. The t-test was used to compare variables between two groups.
