Abstract: AIM: To perform the function of timing during incoming data with EpiData, which can provide an effective method to monitor data.METHODS: The data were input with EpiData, then the function of timing was come true through two methods of compiling control sequence code.The first way was variable chronometry, which sets up variance in database and installed the order of quality control.The second way was document chronometry.Timing results were wrote-in document drawing assistance from the function of writenote with EpiData.The above two methods can count time during incoming data.The system would automatically make time write-in variance or document. RESULTS: The numeric type timing variance would be obtained in database with the way of variable chronometry.The timing would be kept as a document of textual form with the way of document chronometry.All the operations would be counted time with the above ways.CONCLUSION: EpiData has the function of counting time.On these grounds, the data would be research-on-research and the inputting plan would be instituted reasonably.The method of timing can make data-in more effective, which can check operators recording ability as an index.

Key words: data management, data in, EpiData, timing