Table:
Factors	Odds ratio	95% Confidence interval	P value
IAC and SCC patients
Gender (male vs. female)	1.333	0.475–3.741	0.580
Preoperative CEA level (<5.0 vs. ≥5.0 IU/mL)	3.647	1.908–6.971	<0.0001
Histology (IAC vs. SCC)	4.286	2.015–9.116	<0.0001
Tumor size, cm (≤1.0 vs. >1.0–≤2.0 vs.>2.0–≤3.0)	1.744	1.006–3.024	0.048
IAC patients
Preoperative CEA level (<5.0 vs. ≥5.0 IU/mL)	6.132	2.787–13.490	<0.0001
Tumor size, cm (≤1.0 vs. >1.0–≤2.0 vs. >2.0–≤3.0)	2.227	1.119–4.432	0.023

Continue parse the figure with markdown style: | Factors | Odds ratio | 95% Confidence interval | P value | 
 | --- | --- | --- | --- | 
 | <COLSPAN=4> IAC and SCC patients | 
 | Gender (male vs. female) | 1.333 | 0.475–3.741 |

0.580 | 
 | Preoperative CEA level (<5.0 vs. ≥5.0 IU/mL) | 3.647 | 1.908–6.971 | <0.0001 | 
 | Histology (IAC vs. SCC) | 4.286 | 2.015–9.116 | <0.0001 | 
 | Tumor size, cm (≤1.0 vs. >1.0–≤2.0 vs.>2.0–≤3.0) | 1.744 | 1.006–3.024 | 0.048 | 
 | <COLSPAN=4> IAC patients | 
 | Preoperative CEA level (<5.0 vs. ≥5.0 IU/mL) | 6.132 | 2.787–13.490 | <0.0001 | 
 | Tumor size, cm (≤1.0 vs. >1.0–≤2.0 vs. >2.0–≤3.0) | 2.227 | 1.119–4.432 | 0.023 |