Before PSM | After PSM | |||||||
---|---|---|---|---|---|---|---|---|
EA (n = 294) | IA (n = 94) | P value | EA (n = 83) | IA (n = 83) | P value | |||
Sex (M/F) | 135/159 | 54/40 | 0.051 | 39/44 | 48/35 | 0.16 | ||
Age (years) | 73 (29–90) | 70 (29–87) | 0.036* | 70 (34–88) | 71 (29–87) | 0.92 | ||
BMI (kg/m2) | 22 (13–33) | 23 (15–41) | < 0.01* | 23 (17–33) | 23 (15–41) | 0.48 | ||
ASA classification (I/II/III) | 70/187/37 | 52/39/3 | < 0.01* | 42/39/2 | 41/39/3 | 0.90 | ||
History of diabetes | 37 (13%) | 10 (11%) | 0.61 | 10 (12%) | 10 (12%) | 1.00 | ||
Tumor location | < 0.01* | 0.74 | ||||||
Right-side colon | 234 (80%) | 52 (55%) | 53 (64%) | 51 (61%) | ||||
Left-side colon | 60 (20%) | 42 (45%) | 30 (36%) | 32 (39%) | ||||
Tumor size | 0.41 | 0.32 | ||||||
> 5 cm | 93 (32%) | 34 (36%) | 24 (29%) | 30 (36%) | ||||
≤ 5 cm | 201 (68%) | 60 (64%) | 59 (71%) | 53 (64%) | ||||
T stage | 0.081 | 0.07 | ||||||
T1–2 | 120 (41%) | 29 (31%) | 35 (42%) | 24 (29%) | ||||
T3–4 | 174 (59%) | 65 (69%) | 48 (58%) | 59 (71%) | ||||
LN metastasis | 0.21 | 0.29 | ||||||
Yes | 71 (24%) | 29 (31%) | 19 (23%) | 25 (30%) | ||||
No | 223 (76%) | 65 (69%) | 64 (77%) | 58 (70%) | ||||
TNM staging | 0.067 | 0.23 | ||||||
I | 111 (38%) | 26 (28%) | 32 (39%) | 22 (27%) | ||||
II | 112 (38%) | 39 (42%) | 32 (39%) | 36 (43%) | ||||
III | 71 (24%) | 29 (30%) | 19 (23%) | 25 (30%) |