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Table 1 Clinical and histological features of hyperplastic polyps

From: Activation of pro-oncogenic pathways in colorectal hyperplastic polyps

Variables

Total of HP

Progastrin staining in HP epithelial cells

 
 

N = 48

No/Low expression

Moderate expression

High expression

p-value

  

N = 21

N = 12

N = 15

 

Age, mean (SD)

65 y.o.(12)

61 y.o.(14)

68 y.o (10)

68 y.o (8)

0.2613

Median [min-max]

66 y.o. [30–89]

65 y.o. [30–80]

70 y.o. [51–89]

66 y.o. [53–79]

 

Sex, % (95% CI)

    

0.019

Female

44% [29%-59%]

33% [15%-57%]

25% [5%-57%]

73% [45%-92%]

 

Male

56% [41%-71%]

67% [43%-85%]

75% [43%-95%]

27% [8%-55%]

 

History of adenoma or adenocarcinoma, % (95% CI)

29% [17%-44%]

33% [15%-57%]

42% [15%-72%]

13% [2%-40%]

0.280a

Synchronous Adenoma or adenocarcinoma, % (95% CI)

48% [33%-63%]

48% [26%-70%]

33% [10%-65%]

60% [32%-84%]

0.387

Localisation, % (95% CI)

    

0.154a

Proximal colon

27% [15%-42%]

19% [5%-42%]

17% [2%-48%]

47% [21%-73%]

 

Distal colon

73% [58%-85%]

81% [58%-95%]

83% [52%-98%]

53% [27%-79%]

 

HP histologic features

    

0.784a

Goblet-cell rich HP

83% [70%-93%]

81% [58%-95%]

92% [62%-100%]

80% [52%-96%]

 

Microvesicular HP

17% [7%-30%]

19% [5%-42%]

8% [0%-38%]

20% [4%-48%]

 
  1. Progastrin expression was analyzed as a 3 classes variable: no/low expression, moderate expression and high expression as detailed in “Methods”. Chi 2 tests (for categorical variables) and Kruskal-Wallis test (for continuous variables) were performed to compare clinical and immune-histological features between progastrin expression groups. 95% CI: Binomial exact 95- confidence interval was calculated for each percentage, if no other mention. SD: standard deviation a: Fischer exact test.