IGFBP-rP1, a potential molecule associated with colon cancer differentiation

Table 3 Correlation between IGFBP-rP1 expression and differentiation in colorectal carcinoma

IGFBP-rP1 expression	Grade^a		Total	Significance
	Low	High
0	3	9	12
1	102	46	148
2	43	18	61
Total	148	73	221	0.006*

The staining of IGFBP-rP1 was divided into three grades (0-2), representing lack and mild of staining (0), intermediate staining (1), and strong staining (2).
^ahistologic grade: low grade (gland formation >50% in tubular adenocarcinoma and papillary carcinoma) and high grade (gland formation <50% in tubular adenocarcinoma, mucinous adenocarcinoma, signet ring cell carcinoma, and undifferentiated carcinoma).*The P value was calculated by chi-square test.

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