. 2020 Aug;9(8):4762–4769. doi: 10.21037/tcr-19-2039

Table 2. Microvessel density compared to Carcinoembryonic antigen-associated cell adhesion molecule 1 (CEACAM1) expression in tumors.

CEACAM1 expression	No.	MVD^a
CEACAM1 expression	No.	Low MVD (% per group)	High MVD (% per group)	P-value^c
Total	80	45 (56.2)	35 (43.8)
CEACAM1 low expression^b	45	33 (73.3)	12 (26.7)	0.001
CEACAM1 high expression^b	35	12 (34.3)	23 (65.7)	0.001

^a, MVD was categorized according to the median MVD of all tumors into low (< 30 microvessels/400× microscopic field of view) and high (≥30 microvessels/400× microscopic field of view); ^b, CEACAM1 expression was categorized into low (<66% of CEACAM1 positive tumor cells) and high (≥66% of CEACAM1 positive tumor cells); ^c, two-sided P-values were calculated by Pearson’s Chi-square test to evaluate significance of correlations.