Table 2

Univariate analysis of potential demographic factors associated with colorectal neoplasia

VariablesNumber (%)HR (95% CI)P value
Family history of colorectal cancer48 (4.9)0.5 (0.2 to 1.5)0.2
Male sex559 (56.6)0.9 (0.6 to 1.4)0.7
Primary sclerosing cholangitis 42 (4.3) 3.5 (1.7 to 6.9) <0.001
Duration of UC at colonoscopy
(year: median, IQR)
19 (12–28)1.02 (0.99 to 1.04)0.2
Age (year: median, IQR)
At colonoscopy 52 (42–61) 1.03 (1.01 to 1.05) 0.001
 At UC onset30 (22–40)1.02 (1.01 to 1.04)0.01
5-aminosalicylate exposure (year)
 <1 183 (18.5)10.6
 1–10448 (45.4)1.2 (0.7 to 2.0)0.5
 >10356 (36.1)0.8 (0.5 to 1.4)
Immunosuppressant exposure (year)
 <1631 (63.9)10.1
 1–10267 (27.1)1.4 (0.9 to 2.3)0.4
 >1089 (9.0)1.3 (0.7 to 2.5)
  • Statistically significant variables are highlighted in bold.