Can bile duct injuries be prevented? A grossly underpowered study.
P Sufi, East Somerset NHS Trust
4 July 2005
This study is not powered to detect bile duct injuries (BDI). If we assume that BDI incidence is around 0.5%, then a study population of 46 patients can not realistically detect any difference in the BDI rate.
Can bile duct injuries be prevented? A grossly underpowered study.
4 July 2005
This study is not powered to detect bile duct injuries (BDI). If we assume that BDI incidence is around 0.5%, then a study population of 46 patients can not realistically detect any difference in the BDI rate.
Competing interests
None declared