Etiology | Total | Males | Females | p value |
---|---|---|---|---|
Unknown | 458 | 224 (48.9%) | 234 (51.1%) | 0.52 |
Idiopathic | 203 | 82 (40.4%) | 121 (59.6%) | 0.01* |
Secondary | 339 | 194 (57.2%) | 145 (42.8%) | 0.00* |
Trauma | 51 | 41 (80.3%) | 10 (19.7%) | 0.0001* |
Infection | 45 | 17 (37.7%) | 28 (62.3%) | 0.105 |
Birth injury | 28 | 21 (75%) | 7 (25%) | 0.027* |
Vascular | 21 | 15 (71.4%) | 6 (28.6%) | 0.119 |
SOL | 16 | 10 (62.5%) | 6 (37.5%) | 0.45 |
TS | 9 | 4 (44.4%) | 5 (55.6%) | 0.741 |
Immune disorder | 9 | 0 | 9 (100%) | 0.001* |
MS | 8 | 5 (62.5%) | 3 (37.5%) | 0.725 |