TABLE 1.
Comparison of demographic, pain, and psychological characteristics between PHN patients and healthy controls (HC, mean ± SD)
| PHN patients | Healthy controls | χ 2/t value | p value | |
|---|---|---|---|---|
| Female/male | 11/5 | 12/8 | 0.295 | .587 |
| Age, yr | 65.75 ± 6.99 | 61.55 ± 8.21 | 1.627 | .113 |
| Education, yr | 11.25 ± 3.92 | 12.20 ± 2.58 | −0.834 | .389 |
| PRI | 15.22 ± 9.19 | 0.90 ± 1.97 | 6.794 | <.001 |
| PPI | 3.06 ± 1.28 | 0.40 ± 0.94 | 7.190 | <.001 |
| VAS | 5.06 ± 2.30 | 0.55 ± 1.13 | 7.697 | <.001 |
| SF‐MPQ | 23.46 ± 12.06 | 1.85 ± 3.77 | 7.586 | <.001 |
| BDI | 6.27 ± 3.93 | 2.15 ± 2.45 | 3.803 | <.001 |
| SAI | 41.73 ± 13.35 | 26.25 ± 4.98 | 4.781 | <.001 |
| TAI | 42.27 ± 8.48 | 31.05 ± 6.36 | 4.747 | <.001 |
Abbreviations: BDI, Beck‐Depression Index; PPI, present pain intensity; PRI, pain rating index; SAI, state‐anxiety index; SF‐MPQ, short‐form McGill pain questionnaire; TAI, trait‐anxiety index; VAS, 10‐cm visual analogue scale.