Table 1.
Baseline characteristics of BU patients.
| BU patients (N = 96) | Controls (N = 384) | |
|---|---|---|
| Sex | ||
| Male | 39 (0.41) | 156 (0.41) |
| Female | 57 (0.59) | 228 (0.59) |
| Age1 median (IQR) | 13 (26) | 13 (23) |
| Clinical form2 | ||
| Ulcer | 82 (0.85) | |
| Nodule | 9 (0.09) | |
| Plaque | 5 (0.04) | |
| Edema | 6 (0.06) | |
| Osteomyelitis | 2 (0.02) | |
| Location of lesion | ||
| Lower limbs | 67 (0.70) | |
| Upper limbs | 19 (0.20) | |
| Head, trunk, buttocks | 10 (0.10) | |
| Category of lesion3 | ||
| (I) Single lesion < 5 cm in diameter | 42 (0.44) | |
| (II) Single lesion 5–15 cm in diameter | 11 (0.11) | |
| (III) Single/multiple lesions > 15 cm in diameter | 43 (0.45) | |
| Number of lesions | ||
| Single | 91 (0.95) | |
| Multiple | 5 (0.05) | |
Data are number of study participants unless otherwise indicated.
1At cohort registration.
2Eight patients had more than one clinical presentation (ulcer and edema [N = 5], ulcer and plaque [N = 1], ulcer and osteomyelitis [N = 2]).
3The WHO definition of categories is provided in the introduction.