Characteristics and outcomes of cholangiocarcinoma by region in Thailand: A nationwide study

Table 1 Baseline characteristics of cholangiocarcinoma patients diagnosed between 2009 and 2013 n (%)

Variable	CCA cases(n = 39421)	Thai population(n = 64076033)	P value
Gender
Male	24120 (61.2)	31529148 (49.2)	< 0.001
Age (mean ± SD, yr)	64.1 ± 11.7	34.91
Geographic region			< 0.0001
Northeast	24239 (61.5)	21585883 (33.7)	< 0.001
North	6699 (17.0)	11783311 (18.4)	< 0.001
Central	5295 (13.4)	16060141 (25.1)	< 0.001
Bangkok	1114 (2.8)	5674843 (8.8)	< 0.001
South	1056 (2.7)	8971855 (14.0)	< 0.001

¹Weighted average age calculated using the midpoint; Standard deviation was undefined; thus, a t-test was not performed. CCA: Cholangiocarcinoma.