Research Article

Risk of Colorectal Cancer in Ulcerative Colitis Patients: A Systematic Review and Meta-Analysis

Table 6

Geographic variation in UC patients in different disease durations.

Area1-9 years10-20 years21-30 yearsMore than 30 years

Asia0.0032
[0.0022; 0.0045]
0.0128
[0.0081; 0.0201]▲
0.0188
[0.0051; 0.0671]▲
0.0106
[0.0013; 0.0819]▲
North America0.0043
[0.0009; 0.0196]
0.0120
[0.0058; 0.0245]
0.0228
[0.0132; 0.0390]▲
Europe0.0097
[0.0020; 0.0461]
0.0141
[0.0089; 0.0221]
0.0222
[0.0104; 0.0465]
0.0193
[0.0144; 0.0257]
Oceania0.048
[0.029; 0.066]

vs. 1-9 years; ▲▲ vs. 1-9 years.