Clinical characteristics of patients in their forties who underwent surgical resection for colorectal cancer in Korea

Table 2 Operative data

	30s (n = 120)	40s (n = 451)	50s (n = 1044)	P value1	P value2	P value3	P value4
Emergency (%)	5.0	2.4	1.8	0.143	0.434	0.023	0.077
Operation type (%)				0.931	0.023	0.155	0.043
Laparoscopy	55.8	59.2	70.1
Robot	35.8	31.2	21.6
Open	5.8	6.2	4.0
Conversion	1.7	1.5	2.0
Transanal	0.8	1.8	2.2
Operation procedure (%)				0.847	0.914	0.897	0.983
Lesional (CME, TME)	93.3	95.6	96.1
Total (TAC, TPC)	5.0	1.8	1.1
Multiple	0	0.7	0.3
Limited (Segmental, TAE, TAMIS)	1.7	2.0	2.6
Combined operation (%)	15	15.7	10.7	0.835	0.008	0.172	0.021
Permanent colostomy (%)	3.3	4.9	3.1	0.472	0.085	0.872	0.222
Operative time, median (min)	200	205	190	0.476	0.026	0.571	0.078
EBL, mean (mL)	69.4	92.9	100.0	0.331	0.685	0.316	0.555

¹30s vs 40s.

²40s vs 50s.

³30s vs 50s.

⁴30s vs 40s vs 50s. CME: Complete mesocolic excision; TME: Total mesorectal excision; TAC: Total abdominal colectomy; TPC: Total proctocolectomy; TAE: Transanal excision; TAMIS: Transanal minimally invasive surgery; EBL: Estimated blood loss.