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Table 3 Gender and age at time of endoscopy as predictors of duodenal or gastric polyps

From: Variables affecting penetrance of gastric and duodenal phenotype in familial adenomatous polyposis patients

  Sum diameter of duodenal polyps Gastric polyp count
All participants (n = 150)
 Gender: Male % (n) 42% (n = 62) Chi sq. = 0.63 p-value = 0.4259 Chi sq. = 0.28 p-value = 0.5991
 Age at Endoscopy Median (Q1-Q3) Spearman = 0.14 p-value = 0.0873 Spearman = 0.19 p-value = 0.0191
Exclude current smokers (n = 128)
 Gender: Male % (n) 41% (n = 53) Chi sq. = 0.3685 p-value = 0.5438 Chi sq. = 0.3022 p-value = 0.5825
 Age at Endoscopy Median (Q1-Q3) Spearman = 0.12 p-value = 0.1643 Spearman = 0.21 p-value = 0.0197  
Exclude NSAID use in past 3 months (n = 133)
 Gender: Male % (n) 41% (n = 55) Chi sq. = 1.0689 p-value = 0.3012 Chi sq. = 0.3216 p-value = 0.5706
 Age at Endoscopy Median (Q1-Q3) Spearman = 0.12 p-value = 0.1643 Spearman = 0.21 p-value = 0.0197  
Exclude non-genetic testers (n = 140)
 Gender: Male % (n) 41% (n = 55) Chi sq. = 1.0689 p-value = 0.3012 Chi sq. = 0.3216 p-value = 0.5706
 Age at Endoscopy Median (Q1-Q3) Spearman = 0.12 p-value = 0.1643 Spearman = 0.21 p-value = 0.0197