Pancreatic, periampullary and biliary cancer with liver metastases: Should we consider resection in selected cases?

Table 2 Results by outcome for pancreatic cancer

	N	Median OS(mo)	95%CI	N	Median OS (mo)	95%CI	P-value
	Resection			No resection
Positive studies
Hackert et al[39]	85	12.3		NA
Tachezy et al[38]	69	14	10.8-18.2	69	7.5	4.9–10.2	< 0.001
Crippa et al[34]	11	39		116	11		< 0.0001
Klein et al[33]	22	16.6		NA
Yamada et al[75]	11	10.1		28	6.8		NS
Shrikhande et al[36]	11	11.4	7.8-16.5	118	5.9	5.4-7.6	0.04
Negative studies
Zanini et al[35]	15	9.1	8.6-9.7	NA
Dünschede et al[40]	9	8 (4-16)		5	11 (10-12)
Gleisner et al[37]	22	5.9		66	5.6		0.46
Takada et al[42]	11	6 (2-10)		33	3 (2-9)

NA: Not available; NS: Not significant.