LAUSR

Administrative data is considered to be the information which is collected primarily for administrative purposes and not for research purposes. In most cases this type of data is collected by government departments or other types of organizations for the purposes of registration, transaction and record keeping, usually during the delivery of a service. The use of administrative data in the field of surgery data has grown popular for measuring the specific results of a procedure, the results of a surgery performed in a large population, and for estimating health economic costs. The use of this type of data is now allowing us to compare the results published by specific surgeons and those that occur in more large population samples. Furthermore, the use of administrative data analysis may help to find less commonly occurring outcomes that are found in larger populations, but are very difficult to quantify in smaller case series. Using administrative data may help defining the population risk level of adverse outcomes, such as complications after gastric bypass, but it shows clear limitation when we are trying to find the factors behind these outcomes [1].