Table 2.
AA characteristics and PCL-5 score by disease type
| AA (n = 540) | AT (n = 185) | AU (n = 724) | Total (n = 1,449) | Significance | |
|---|---|---|---|---|---|
| AA disease specifics per disease type | |||||
| Years with AA, mean (SD) | 12.1 (12.5) | 16.7 (15.2) | 22.2 (16.8) | 17.7 (15.8) | p < 0.001 |
| Current active hair loss, n/N (%) | 488/540 (90.4) | 169/185 (91.4) | 688/724 (95.0) | 1,325/1,449 (91.4) | p = 0.491 |
| Hair regrowth, n/N (%) | 83/239 (34.7) | 102/170 (60.0) | 257/724 (35.5) | 442/1,133 (39.0) | p < 0.001 |
| Hair loss lasting >6 months, n/N (%) | 206/311 (66.2) | 139/174 (79.9) | 542/640 (84.7) | 887/1,125 (78.8) | p < 0.001 |
| PCL-5 overall scores per disease type | |||||
| PCL-5 score, mean (SD) | 24.5 (18.3) | 30.1 (19.2) | 26.0 (19.9) | 26.0 (19.3) | p = 0.003 |
| PCL-5 score ≥33, n/N (%) | 166/540 (30.7) | 80/185 (43.2) | 245/724 (33.8) | 491/1,449 (33.9) | p = 0.008 |
| PCL cluster scores per disease type | |||||
| Intrusion (B), mean (SD) | 1.4 (1.4) | 1.6 (1.4) | 1.3 (1.4) | 1.4 (1.4) | p < 0.001 |
| Proportion of answers ranging from “moderately” to “extremely” (B), % | 39.7 | 46.7 | 36.8 | 39.1 | p < 0.001 |
| Avoidance (C), mean (SD) | 1.5 (1.4) | 1.8 (1.4) | 1.6 (1.5) | 1.6 (1.4) | p = 0.007 |
| Proportion of answers ranging from “moderately” to “extremely” (C), % | 44.1 | 52.7 | 44.8 | 45.5 | p = 0.011 |
| Cognition and mood (D), mean (SD) | 1.2 (1.3) | 1.6 (1.5) | 1.4 (1.4) | 1.4 (1.4) | p < 0.001 |
| Proportion of answers ranging from “moderately” to “extremely” (D), % | 35.1 | 46.3 | 39.6 | 38.8 | p < 0.001 |
| Arousal and reactivity (E), mean (SD) | 1.0 (1.3) | 1.2 (1.3) | 1.1 (1.3) | 1.1 (1.3) | p < 0.001 |
| Proportion of answers ranging from “moderately” to “extremely” (E), % | 28 | 35.3 | 32.1 | 31 | p < 0.001 |
AA, alopecia areata; AT, alopecia totalis; AU, alopecia universalis.