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Why a course with EpiData software? oRequirement of data quality o5S principle (Eric Brenner, FoED): Small; Simple; Stable; Speedy; Sufficient oFreeware oWhat is this course about? Hans L Rieder
How can you know that the data entered into the spreadsheet are correct? Spreadsheets are for calculations, they are not data entry forms!
sample1.qes: 73 bytes sample1.rec: 292 bytes Total: 365 bytes sample3.qes: 88 bytes sample3.rec: 337 bytes Total: 425 bytes sample2.mdb: 88064 bytes Total: 88064 bytes Windows!! QES–REC-CHK !!
The “Epi Info Family” Epi Info 6Epi Info 7EpiData File 11.30 MBFile 113.7 MBFile 1967 KB File 21.29 MB-File 21.87 MB File 31.30 MB-- Total3.89 MBTotal13.7 MBTotal2.84 MB
EpiData software is simple QES file REC file CHK file All files are simple straight text (ASCII) files!
EpiData software is stable oIt will rarely crash (only when the operating system is jeopardized) oIf it crashes, you will only loose the one record on which you are currently working
EpiData software is speedy oAlmost as fast as Epi Info 6 oTwice as fast as Epi Info 2 K
EpiData software is sufficient oData quality: assurance through CHK files and double-entry validation oDocumentation: document every step in data entry and analysis oSafety: Rijndal (AE) encryption
EpiData software is freely available at: www.epidata.dk EpiData Entry (967 KB) EpiData Analysis (1.87 MB)
What is this course about? To demonstrate how data quality can be assured: oBy using checks to control data entry oBy working together oBy validating content through double entry and comparison
Double-entry and validation is possible with a spreadsheet, but… =IF(B4=F4,"","Discordant")
…the spreadsheet does it variable by variable, EpiData efficiently only by discordant record
Use of EpiData (questionnaire design and entry)
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