Table 1 Patients’ characteristics, clinicopathological factors and operative outcomes.
Factors | Entire cohort | Matched cohort | ||||
|---|---|---|---|---|---|---|
The conventional group (n = 98) | The IUS group (n = 26) | p-value | The conventional group (n = 25) | The IUS group (n = 25) | p-value | |
Patients’ characteristics and clinicopathological factors | ||||||
Age (years) | ||||||
< 75 | 57 | 17 | 0.65 | 16 | 16 | < 0.999 |
≤ 75 | 41 | 9 | 9 | 9 | ||
Sex, n | ||||||
Male | 75 | 13 | 0.014 | 14 | 13 | < 0.999 |
Female | 23 | 13 | 11 | 12 | ||
Body mass index (kg/m2) | ||||||
Median (range) | 22.7 (14.8–36.5) | 23.0 (17.1–35.6) | 0.89 | 21.7 (17.7–32.5) | 22.0 (17.1–35.6) | 0.85 |
History of laparotomy | ||||||
Yes | 31 | 9 | 6 | 8 | ||
No | 67 | 17 | 0.81 | 19 | 17 | 0.75 |
Tumor location, n | ||||||
Cecum | 20 | 3 | 0.23 | 2 | 3 | < 0.999 |
Ascending colon | 56 | 13 | 14 | 13 | ||
Transverse colon | 22 | 10 | 9 | 9 | ||
Tumor depth, n | ||||||
T1,2 | 48 | 9 | 0.27 | 8 | 9 | < 0.999 |
T3,4 | 50 | 17 | 17 | 16 | ||
Histology | ||||||
Pap, tub1, tub2 | 92 | 25 | < 0.999 | 24 | 24 | < 0.999 |
Por, muc | 6 | 1 | 1 | 1 | ||
Operative outcomes | ||||||
Number of dissected lymph nodes | ||||||
Median (range) | 18 (1–100) | 22 (7–72) | 0.34 | 17 (1–45) | 21 (7–55) | 0.267 |
Operative duration (min) | ||||||
Median (range) | 235 (142–365) | 287 (145–458) | < 0.01 | 240 (158–365) | 287 (145–458) | 0.056 |
Intraoperative blood loss (ml) | ||||||
Median (range) | 30 (5–350) | 5 (5–95) | 0.037 | 30 (5–200) | 5 (5–95) | 0.035 |
Transfusion | ||||||
Yes | 1 | 0 | < 0.999 | 0 | 0 | < 0.999 |
No | 97 | 26 | 25 | 25 | ||
