1.

单操作孔组与三孔组临床资料比较

Comparision of clinical characteristics between groups

Clinical characteristics	Single utility port group (n=87)	3-port group (n=75)	t/χ2	P
Sex			0.581	0.446
Male	65	52
Female	22	23
Age (yr)	63.86±12.10	66.20±8.72	1.423	0.157
Tumor location			5.741	0.219
Left upper	23	16
Left lower	11	15
Right upper	32	18
Right middle	8	8
Right lower	13	18
Pathological types			2.011	0.156
Squamous cell carcinoma	39	42
Adenocarcinoma	48	33
T grade			1.544	0.462
1	28	31
2	57	42
3	2	2
N grade			0.128	0.938
0	33	30
1	36	31
2	18	14
TNM			0.457	0.796
Ⅰ	31	30
Ⅱ	38	29
Ⅲ	18	16