Table 2.
Statistical analysis of the dermoscopic features with regard to PGA scores
| Variable | Median (min–max)§ | P-value | |
|---|---|---|---|
| Pseudo-fiber sign | A (n = 44) P (n = 23) |
1 (1–3) 2 (1–4) |
< 0.001 |
| Dilated hyponychial capillaries | A (n = 43) P (n = 24) |
1 (1–3) 2 (1–4) |
< 0.001 |
| Nail plate thickening and crumbling | A (n = 55) P (n = 12) |
1 (1–3) 3 (1–4) |
< 0.001 |
| Transverse grooves | A (n = 61) P (n = 6) |
1 (1–4) 3 (1–4) |
0.002 |
| Trachyonychia | A (n = 56) P (n = 11) |
1 (1–4) 2 (1–4) |
0.012 |
| Subungual hyperkeratosis | A (n = 61) P (n = 6) |
1 (1–3) 3 (2–4) |
< 0.001 |
| Splinter haemorrhages | A (n = 18) P (n = 49) |
1 (1–2) 1 (1–4) |
0.096 |
| Pitting | A (n = 28) P (n = 39) |
1 (1–4) 1 (1–4) |
0.320 |
| Distal onycholysis | A (n = 30) P (n = 37) |
1 (1–4) 1 (1–3) |
0.202 |
| Salmon patches | A (n = 52) P (n = 15) |
1 (1–3) 1 (1–4) |
0.124 |
| Leukonychia | A (n = 63) P (n = 4) |
1 (1–4) 1 (1–1) |
0.135 |
| Lunular red spots | A (n = 66) P (n = 1) |
1 (1–4) 2 (2–2) |
0.301 |
Median (minimum-maximum values), A – absent, P – present
§
1 – mild according to PGA score, 2 – moderate according to PGA score, 3 – severe according to PGA score, 4 – very severe according to PGA score.