3.2 Results of the comparison of related variables:
thoracoscopic versus open resection
There were no statistically significant differences between the
thoracoscopic resection group and the open resection group in the
related preoperative variables (median [range]), including
gestational age at birth (39.4 w [34.1-41.1] vs 39.3 w
[35.5-41.4], P=.977), body weight (3260 g [2100-4270] vs 3240 g
[2760-3860], P=.838), head circumference (33 cm [32-37] vs 34 cm
[31-34], P=.785), lesion size (24.00 cm3[12.00-63.00] vs 34.85 cm3 [8.00-125.00],
P=.319), CVR (0.37 [0.18-1.00] vs 0.55 [0.13-1.92], P=.266), and
age at operation (10 d [5-21] vs 11 d[7-17], P=.442) (Table
2).The related intraoperative variables showed statistically significant
differences between the groups. The length of the surgical incision in
the thoracoscopic resection group was significantly shorter than that in
the open resection group (1.4 cm [1.3-1.8] vs 6.0 cm [5.0-8.0],
P=.000), and there was significantly less blood loss in the
thoracoscopic resection group (3 ml [1-6] vs 5 ml [2-10],
P=.030), but their operation time was significantly longer (159 min
[100-220] vs 110 min [70-170], P=.003) (Fig. 2).Regarding the
related postoperative variables, the postoperative ventilator days (3 d
[1-6] vs 2 d [1-3], P=.159), duration of chest tube use (8 d
[4-22] vs 6 d [4-15], P=.052) and length of postoperative
hospital stay (12 d [10-25] vs 12.5 d [9-16], P=.425) did not
significantly differ between the two groups.