Survival after surgery among patients with cholangiocarcinoma in Northeast Thailand according to anatomical and morphological classification

Table 4 Multivariable analyses for the combination of anatomical and morphological classification with survival in CCA patients using multiple cox regression

Combination of anatomical and morphological classification	Person-months	IR per 100	Crude HR	Adjusted **HR	95% CI	P-value
ICI	1885	1.9	Ref.	Ref.		0.013
ICM	4373	4.1	*2.03	*1.45	1.01–2.09
ICP	1161	2.3	1.18	0.96	0.58–1.59
ICMIX	294	3.1	1.39	0.84	0.40–1.77
PCM	990	4.7	*2.13	1.12	0.72–1.75
PCP	3074	3.8	*1.88	1.23	0.84–1.81
PCI	1397	1.9	0.96	0.84	0.51–1.40
PCMIX	605	3.5	1.55	0.80	0.46–1.39
DCM	675	3.0	1.44	0.74	0.42–1.29
DCP	821	2.6	1.35	0.91	0.52–1.58
DCI	369	2.4	1.30	1.05	0.50–2.21

CI Confidence interval, HR hazard ratio, Ref. reference group
* P < 0.05
** Hazard ratio of anatomical classification adjusted for effects of stage of CCA, gender, age, O. viverrini infection, education levels, occupation, smoking cigarettes, alcohol drinking, and praziquantel treatment

ISSN: 1471-2407