Table 4 Comparison of intraoperative and postoperative data among the studied groups
From: The additive value of diffusion tensor imaging in the determination of perianal fistula activity
Group 1 (Active fistula) N = 10 | Group 2 (Inactive fistula) N = 20 | Test of significance | |
|---|---|---|---|
Intraoperative detection of pus | |||
No | 0 | 20 (100) | χ2 = 30 |
Yes | 10 (100) | 0 | p < 0.001* |
Intraoperative difficulty (bleeding) | |||
No | 5 (50) | 17 (85) | χ2 = 4.18 |
Yes | 5 (50) | 3 (15) | p = 0.041* |
Operative time (minutes) mean ± Standard deviation (SD) | 44 ± 9.66 | 26 ± 5.03 | t = 6.77 p < 0.001* |
One or two-stage procedure | |||
One stage | 2 (20) | 12 (60) | χ2 = 4.29 |
Two stage | 8 (80) | 8 (40) | p = 0.038* |
Postoperative wound infection | |||
− ve | 4 (40) | 16 (80) | χ2FET = 4.8 |
+ ve | 6 (60) | 4 (20) | p = 0.028* |
Postoperative bleeding | |||
− ve | 5 (50) | 16 (80) | χ2 = 2.86 |
+ ve | 5 (50) | 4 (20) | p = 0.091 |
Postoperative fecal incontinence | |||
− ve | 7 (70) | 18 (90) | χ2FET = 1.92 |
+ ve | 3 (30) | 2 (10) | p = 0.166 |
Time to wound healing mean ± SD | 8.2 ± 1.75 | 4.95 ± 1.05 | t = 6.37 p < 0.001* |
Time of return to normal activity mean ± SD | 3.10 ± 0.568 | 1.65 ± 0.489 | t = 7.26 p < 0.001* |