| Variable | n (%) |
|---|---|
| Gender | |
| Male | 64 (69.6%) |
| Female | 28 (30.4%) |
| Age (years) | |
| Mean ± SD | 14.7 ± 1.3 |
| Minimum | 8 |
| Maximum | 18 |
| The side of nasal cavity | |
| Left side | 59 (64.1%) |
| Right side | 33 (35.9%) |
| The bleeding point | |
| Mucosal bulge with a red or white top | 36 (39.1%) |
| Primary telangiectasias | 56 (60.9%) |
| Average duration of epistaxis (weeks) | 2.2 ± 0.6 |
| Prior silver nitrate attempts | 37 (40.2%) |
| Katsanis ESS | |
| Mean ± SD | 7.86 ± 0.59 |
| 7 | 80 (87.0%) |
| 8 | 11 (12.0%) |
| 9 | 1 (1.0%) |