Information for the creation of Food balance sheets is extracted from the Supply/utilization accounts maintained by FAOSTAT. There are different sources of information according to the different elements requested:
Coverage and Accuracy
Both the coverage and the accuracy of FBS depend on the reliability of the underlying statistics of population, supply and utilization of fishery foods and on the accuracy of the nutritive value data of various foods which is usually the mandate of the national health and nutrition authorities.
数据收集方法: The food balance sheets are extracted from individual Supply Utilization Accounts series for each primary and processed commodity, prepared on a calendar-year basis
数据处理方法: To overcome the lack of coverage and accuracy particularly in the statistics of utilization for non-food purposes, as well as in those of commercial stocks, estimates can be prepared. The influence of the absence of statistics on stocks is considered to be reduced by preparing the FBS as an average for a 3-year period
数据核准机制: Production statistics are, in many cases, improved through carrying out statistical field surveys.
In the preparation of food balance sheets considerable use is made of evaluation techniques, provided by consistency checks.
数据处理方法: The accounting technique of the food balance sheets itself is a valid internal consistency check