A case of methicillin-resistant Staphylococcus aureus infection following bile duct stenting

Table 1 Effect of preoperative biliary drainage on postoperative morbidity and mortality rates.

Study	Number of patients	Number of BD	Number of BB/PD	Effect of BD on
				Postoperative morbidity	Postoperative mortality
Sohn et al[10]	567	408	0/567	No difference	No difference
Martignoni et al[5]	257	99	0/257	No difference	No difference
Karsten et al[7]	241	149	45/163	No difference	NA
Povoski et al[1]	240	126	0/240	Increased, P<0.025	Increased, P<0.037
Lai et al[3]	87	37	49/23	No difference	No difference
Heslin et al[4]	74	39	0/74	Increased, P<0.04	No difference
Hatfield et al[8]	57	29	34/5	No difference	No difference

Abbreviations: BD, biliary drainage; BB, biliary bypass; PD, pancreatoduodenectomy; NA, not available.