Table 1 Demographic characteristics and types of fistula
N | % | |
|---|---|---|
Age in years (Mean ± SD) | 40 ± SD 13 | |
Gender | ||
Male | 128 | 80.5 |
Female | 31 | 19.5 |
Recurrent fistula | ||
Yes | 49 | 30.8 |
No | 110 | 69.2 |
Type of frimary fract | ||
Superficial | 16 | 10.1 |
Inter-sphincteric | 43 | 27.0 |
Trans-sphincteric | 84 | 52.8 |
Supra-sphincteric | 7 | 4.4 |
Extra-sphincteric | 1 | 0.6 |
Horse shoe | 1 | 0.6 |
Multiple tracts | 1 | 0.6 |
Not classified | 6 | 3.8 |
Number of internal openings | ||
1 | 155 | 97.5 |
2 | 4 | 2.5 |
Level of internal opening | ||
Below the dentate line | 68 | 42.8 |
At the dentate line | 67 | 42.1 |
Above the dentate line | 7 | 4.4 |
Rectum | 6 | 3.8 |
Not classified | 11 | 6.9 |
Horse shoeing | ||
Inter-sphincteric | 4 | 2.5 |
Infra-levator (in ischiorectal fossa) | 3 | 1.9 |
Absent | 152 | 95.6 |
Abscess | ||
Inter-sphincteric | 8 | 5.0 |
Infra-levator | 6 | 3.8 |
Supra-levator | 1 | 0.6 |
Absent | 144 | 90.6 |
Sphincter defects | ||
Present | 34 | 21.4 |
Absent | 125 | 78.6 |