Table 3. Known-groups validation analyses of Skindex-16.
| Scales of the Skindex-16 and severity of main skin condition | mean (SD) | median (p25–p75) | p-value* |
|---|---|---|---|
| Symptoms (4 items) | 0.002 | ||
| Mild (n = 52) | 27.96 (29.29) | 20.83 (4.17–41.67) | |
| Moderate (n = 50) | 39.92 (31.09) | 35.42 (8.33–62.50) | |
| Severe (n = 7) | 75.60 (26.07) | 79.17 (62.50–100.0) | |
| Emotions (7 items) | < 0.001 | ||
| Mild (n = 52) | 40.31 (32.04) | 35.71 (12.70–61.90) | |
| Moderate (n = 50) | 70.00 (28.46) | 80.48 (54.76–91.67) | |
| Severe (n = 7) | 81.92 (17.95) | 77.78 (69.05–100.00) | |
| Functioning (5 items) | < 0.001 | ||
| Mild (n = 52) | 19.10 (26.90) | 6.67 (0.00–23.33) | |
| Moderate (n = 50) | 43.77 (28.42) | 36.67 (20.00–66.67) | |
| Severe (n = 7) | 61.90 (36.56) | 70.00 (23.33–100.00) |
* = Kruskal Wallis test; SD = standard deviation; p25 = percentile 25; p75 = percentile 75.