N-OTC is associated with shorter operative time and fewer peri-operative complications , and it is comparable to R-OTC in terms of CBD injury risk during cholecystectomy .
R-OTC is helpful for peri-operative CBD stone detection and there is therefore reduced readmission for retained CBD stones .
The N-OTC approach may be adopted routinely for patients undergoing laparoscopic cholecystectomy providing there are no clinical , biochemical or radiological features suggestive of CBD stones .
INTRODUCTION The aim of this review was to systemically analyse trials evaluating the efficacy of routine on-table cholangiography ( R-OTC ) versus no on-table cholangiography ( N-OTC ) in patients undergoing cholecystectomy .
A method for assessing the quality of a randomized control trial.
A system has been constructed to evaluate the design , implementation , and analysis of  r and omized control trials ( RCT ) . The degree of quadruple blinding ( the r and omization process , the physicians and patients as to therapy , and the physicians as to ongoing results ) is considered to be the most important aspect of any trial . The analytic techniques are scored with the same emphasis as is placed on the control of bias in the planning and implementation of the studies . Description of the patient and treatment material s and the measurement of various controls of quality have less weight . An index of quality of a RCT is proposed with its pros and cons . If published papers were to approximate these principles , there would be a marked improvement in the quality of r and omized control trials . Finally , a reasonable st and ard design and conduct of trials will facilitate the interpretation of those with conflicting results and help in making valid combinations of undersized trials
N-OTC is associated with shorter operative time and fewer peri-operative complications , and it is comparable to R-OTC in terms of CBD injury risk during cholecystectomy .
R-OTC is helpful for peri-operative CBD stone detection and there is therefore reduced readmission for retained CBD stones .
The N-OTC approach may be adopted routinely for patients undergoing laparoscopic cholecystectomy providing there are no clinical , biochemical or radiological features suggestive of CBD stones .
INTRODUCTION The aim of this review was to systemically analyse trials evaluating the efficacy of routine on-table cholangiography ( R-OTC ) versus no on-table cholangiography ( N-OTC ) in patients undergoing cholecystectomy .