Table 2 Comparison of the intraoperative results between the two groups
Characteristics | Control group (n = 26) | Study group (n = 26) | t/Z/χ value | P value |
|---|---|---|---|---|
Time to surgery (hours), mean (SD) | 19.8(17.0) | 24.4(18.2) | 0.93 | 0.36 |
Operation duration (minutes), mean (SD) | 55.5(7.48) | 49.5(6.45) | 3.1 | 0.03 |
Frequency of key-guide needle drilling (n), median (Q1, Q3) | 4(3, 4) | 1(1, 2) | -5.65 | 0.00 |
Intraoperative blood loss (mL), mean (SD) | 59.5(13.48) | 41.46(15.45) | 4.48 | 0.00 |
Incision length (cm), mean (SD) | 5.06(0.75) | 3.05(0.28) | 12.91 | 0.00 |
Optimal blade position, n (%) | 23(88.5) | 26(100) | 3.18 | 0.24 |