Quality control – done in conjunction with data collection – is one of key stages of implementing the Household Elderly Survey, when a fully automated system is adopted with certain regulations to control data entry, to find errors and notes on forms and to fix them under a supervisor after recurring to the household if necessary.
In addition, quality control stage involves following-up and studying daily reports coming from respective operation room, then preparing periodical reports on field work progress and submitting them to officials of the General Authority for Statistics by the administrative department supervising the survey. 
This stage also incorporates field visits by the supervisor of Household Elderly Survey, in addition to department managers in concern and a number of specialists, to gain field insights into data collection, entry and auditing, and to follow up the application of instructions to obtain top quality results.
With special attention to the technical dimensions while not overlooking the administrative aspect, field visits focus on key cities in the survey sample, by adopting forms particularly prepared for this purpose. The forms feature sampling of some forms picked from a surveyor study to learn about data entry process, audit, and completing the field visit form including stratification with the organization of field and desk work.