Table 6.

Geographic variation in UC patients in different disease durations.

Area	1-9 years	10-20 years	21-30 years	More than 30 years
Asia	0.0032 [0.0022; 0.0045] n = 1	0.0128 [0.0081; 0.0201]▲ n = 6	0.0188 [0.0051; 0.0671]▲ n = 4	0.0106 [0.0013; 0.0819]▲ n = 2
North America	0.0043 [0.0009; 0.0196] n = 4	0.0120 [0.0058; 0.0245] n = 5	—	0.0228 [0.0132; 0.0390]▲ n = 2
Europe	0.0097 [0.0020; 0.0461] n = 6	0.0141 [0.0089; 0.0221] n = 10	0.0222 [0.0104; 0.0465] n = 7	0.0193 [0.0144; 0.0257] n = 10
Oceania	—	0.048 [0.029; 0.066] n = 1	—	—

▲P < 0.05 vs. 1-9 years; ▲▲P < 0.01 vs. 1-9 years.