Table 2 Comparison of anterior blood loss, duration of surgery, anterior incision length, postoperative anal exhaust time, and sinus tract formation in the two groups (\( \overline{x} \)±s)
Groups | Cases (n) | Intraoperative blood loss (ml) | Duration of surgery (minutes) | Incision length (cm) | Anal exhaust time (hours) | Sinus tract formation (n) |
|---|---|---|---|---|---|---|
A | 36 | 156.3 ± 24.7 | 67.6 ± 13.2 | 11.7 + 2.6 | 22.3 ± 5.12 | 1 |
B | 32 | 206.5 ± 39.2 | 105.7 ± 16.3 | 20.3 + 2.9 | 30.3 ± 5.69 | 5 |
Statistic | t = 8.875 | t = 3.280 | t = 9.058 | t = 5.013 | χ2 = 7.696 | |
P value | 0.005 | 0.003 | 0 | 0.017 | 0.002 |