Orbit global services


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Do you want to work from home and earn 10,000 - 30,000/Month?
Orbit Global Services is currently seeking full-time & part-time employees to
enter data for over 250 companies globally. You can earn a
handsome income every month with no experience.Work Onlne in your spare time.Work from home/office/other place Visit www.orbitglobalservices.in OR mail orbitglobalservices@gmail.com Call +91-9313440369, +91-9582250630 , +91-9582250632, +91-9587716510.

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Orbit global services

  1. 1. Use of DataPool (questionnaire design and entry)
  2. 2. Introduction to DataPool <ul><li>Data entry and documentation </li></ul><ul><li>Free program </li></ul><ul><li>Based on EpiInfo </li></ul><ul><li>Windows format </li></ul><ul><li>No limit on No of observation </li></ul><ul><li>(tested with >100.000) </li></ul>
  3. 3. DataPool (I) <ul><li>Creating questionnaire </li></ul><ul><li>Controlled data entry </li></ul><ul><li>Documenting and printing data </li></ul><ul><li>Correction of questionnaires, records </li></ul><ul><li>Comparing of 2 data files </li></ul><ul><li>Importing and exporting data </li></ul><ul><li>Simple analysis </li></ul>
  4. 4. DataPool (II) <ul><li>Simple surveys – one questionnaire </li></ul><ul><li>Complicated surveys – few questionaires </li></ul><ul><li>If there is ID – possible to merge data </li></ul>
  5. 5. DataPool files <ul><li>.QES file </li></ul><ul><ul><ul><ul><li>Questionnaire </li></ul></ul></ul></ul><ul><li>.REC file </li></ul><ul><ul><ul><ul><li>Actual data </li></ul></ul></ul></ul><ul><li>.CHK file </li></ul><ul><ul><ul><ul><li>Any defined checks </li></ul></ul></ul></ul><ul><li>Other notes or log files </li></ul>
  6. 6. DataPool workflow <ul><li>1. Define Data </li></ul><ul><li>2. Make Data File </li></ul><ul><li>3. Set up Checks </li></ul><ul><li>4. Enter Data </li></ul><ul><li>5. Document </li></ul><ul><li>6. Export Data </li></ul>
  7. 7. Creating Questionnaire <ul><li>Define Data </li></ul><ul><li>Can either open .QES file or create one </li></ul>
  8. 8. New questionnaire <ul><li>Type in window </li></ul><ul><li>Cut and paste from Word documents </li></ul><ul><li>Preview questionnaire </li></ul><ul><ul><li>(click Make data file > preview data form) </li></ul></ul>
  9. 9. Structure of questionnaire <ul><li>Three sections: </li></ul><ul><ul><li>Field name (variable) </li></ul></ul><ul><ul><li>Text describing field </li></ul></ul><ul><ul><li>Input definition (number/ letters/ date) </li></ul></ul>
  10. 10. Field name (variable) <ul><li>No more than 10 characters </li></ul><ul><li>Begin with a letter </li></ul><ul><li>No spaces or punctuation marks </li></ul>
  11. 11. Field Name (II) <ul><li>First word </li></ul><ul><ul><li>Uses first word of line </li></ul></ul><ul><li>Automatic </li></ul><ul><ul><li>EpiData generates field names based on question </li></ul></ul><ul><ul><li>Uses first 10 letters </li></ul></ul><ul><ul><li>Childquest Child questionnaire <Y> </li></ul></ul>
  12. 12. Automatic field names <ul><li>Text in curly brackets { } used in preference </li></ul><ul><li>Common words skipped (what, the, and, etc.) </li></ul><ul><li>If question starts with number, “N” is inserted before the number </li></ul>
  13. 13. Automatic field names, examples <ul><li>Question: Field name: </li></ul><ul><ul><li>Did you {eat ice cream} EATICECREAM </li></ul></ul><ul><ul><li>What is your name? ISYOURNAME </li></ul></ul><ul><ul><li>2. Age N2AGE </li></ul></ul>
  14. 14. Variable type <ul><li>Define variables using “Pick List” or “Code writer” </li></ul><ul><li>Choose type of variable: </li></ul><ul><ul><li>Numeric </li></ul></ul><ul><ul><li>Text </li></ul></ul><ul><ul><li>Date </li></ul></ul><ul><ul><li>Soundex </li></ul></ul><ul><ul><li>Boolean (Yes/No) </li></ul></ul><ul><ul><li>Autonumber </li></ul></ul>
  15. 15. Text variables <ul><li>Information of text and/or numbers </li></ul><ul><li>Holding information (e.g. names, addresses) </li></ul><ul><li>UPPER CASE </li></ul><ul><ul><li>Can only hold upper case (capital) letters </li></ul></ul><ul><ul><li>Lower case variable automatically converted into upper case text (ex: Egypt converted into EGYPT) </li></ul></ul><ul><li>No mathematical operations </li></ul><ul><li>Length (How many characters) </li></ul><ul><li><_> </li></ul>
  16. 16. Numeric variables <ul><li>Numerical information </li></ul><ul><li>Hold integers (whole numbers) or numbers with a decimal point </li></ul><ul><li>Length (digits, decimals after the comma) </li></ul><ul><li><#>, <##.#> </li></ul>
  17. 17. Other variables <ul><li>Boolean variables (s. logical variables s. YES/NO variables) </li></ul><ul><ul><li>only two possible answers: Yes or No </li></ul></ul><ul><ul><li><Y> </li></ul></ul><ul><li>Date variables: </li></ul><ul><ul><li>Hold information on dates </li></ul></ul><ul><ul><li>Data in american <MM/DD/YYYY> </li></ul></ul><ul><ul><li>European <DD/MM/YYYY> </li></ul></ul><ul><li>Soundex: </li></ul><ul><ul><li>Coding of words (anonymous, eg. A-123) </li></ul></ul><ul><ul><li>Code to limit orthographic errors (eg. Rome and Roma) </li></ul></ul><ul><ul><li><S > </li></ul></ul>
  18. 18. System variables <ul><li>Values generated automatically </li></ul><ul><li>Today date: date of the data entry </li></ul><ul><ul><li><Today-dmy> </li></ul></ul><ul><ul><li><Today-mdy> </li></ul></ul><ul><li>Auto identification number: Counts the records entered </li></ul><ul><ul><li><IDNUM> </li></ul></ul>
  19. 19. Save Questionnaire <ul><li>Preview data </li></ul><ul><li>Save questionnaire </li></ul><ul><ul><li>Creates .QES file </li></ul></ul><ul><li>Create Data file </li></ul><ul><ul><li>Click Make Data file button > Make Data file </li></ul></ul><ul><ul><li>Creates .REC file </li></ul></ul><ul><li>Questionnaire and Data file ready </li></ul><ul><li>But…… </li></ul>
  20. 20. Errors in data entry <ul><li>T ranposition (ex: 39 becomes 93) </li></ul><ul><li>Copying errors (0 copy as an “o” letter) </li></ul><ul><li>Consistency errors: two or more responses are contradictory (sex: man, pregnancy=Yes) </li></ul><ul><li>Range errors: answers outside of probable or possible values (ex: heigh = 3 metres) </li></ul>
  21. 21. Preventing errors <ul><li>Standardised and previously tested questionnaire </li></ul><ul><li>Training the interviewers and data entry clerck </li></ul><ul><li>Checking and validating paper forms of the questionnaires </li></ul><ul><li>Checking during the data entry (Check module Epi-Data) </li></ul><ul><li>Validation: entering twice data by different operators </li></ul><ul><li>Checking after data entry (Analysis module Epi-Info) </li></ul>
  22. 22. Checks (I) <ul><li>Reduce errors in input </li></ul><ul><li>Checks help with data entry </li></ul><ul><li>Many different types </li></ul><ul><li>Examples: </li></ul><ul><ul><li>Limit entry of numbers to specific range </li></ul></ul><ul><ul><li>Forcing entry to be made in field </li></ul></ul><ul><ul><li>Conditional jumps </li></ul></ul><ul><ul><li>Copying the data from the previous record </li></ul></ul><ul><ul><li>Help messages </li></ul></ul><ul><ul><li>Conditional operations (ex if….then operations) </li></ul></ul>
  23. 23. Checks (II) <ul><li>Once Data file is created: </li></ul><ul><li>Click Checks button > choose .REC file </li></ul>
  24. 24. Checks (III) <ul><li>Range, legal: </li></ul><ul><ul><li>1-3, 9 </li></ul></ul><ul><ul><li>First range then individual numbers </li></ul></ul><ul><ul><li>Tallinn, Riga, Vilnius </li></ul></ul><ul><ul><li>Fixing only min or max value </li></ul></ul><ul><ul><ul><li>- INF-5 (all numbers inferior or equal 5) </li></ul></ul></ul><ul><ul><ul><li>0-INF (all positive numbers superior or equal to 0) </li></ul></ul></ul><ul><li>Jumps: </li></ul><ul><ul><li>Field: AGEYEARS </li></ul></ul><ul><ul><li>0>AGEMONTHS </li></ul></ul><ul><ul><li>0>AGEMONTHS, 1>ADDRESS </li></ul></ul><ul><ul><li>1>END </li></ul></ul><ul><li>MustEnter: </li></ul><ul><ul><li>Data must be entered in Field </li></ul></ul>
  25. 25. Checks (IV) <ul><li>Repeat: </li></ul><ul><ul><li>Show data from previous record </li></ul></ul><ul><li>Value Label </li></ul><ul><ul><li>Add text to explain values </li></ul></ul><ul><ul><li>Click + to add label </li></ul></ul><ul><ul><li>Format as shown </li></ul></ul><ul><ul><li>Press F9 during data entry to see labels </li></ul></ul>
  26. 26. Data Entry (I) <ul><li>Click Enter data button > choose .REC file </li></ul><ul><li>Dates: </li></ul><ul><ul><li>15/5/2006 – type 150506 or 15/5/06 </li></ul></ul><ul><li>Value Labels: </li></ul><ul><ul><li>Press F9 to view </li></ul></ul>
  27. 27. Data Entry (II) <ul><li>Record navigation: </li></ul><ul><li>Delete records: </li></ul><ul><ul><li>Click cross to delete </li></ul></ul><ul><ul><li>Record marked for deletion, but can be recovered </li></ul></ul>
  28. 28. Document Tools <ul><li>File Structure </li></ul><ul><li>Data entry notes ( .NOT file) </li></ul><ul><ul><li>Use to write comments during data entry eg: difficult to read handwriting etc </li></ul></ul><ul><li>View Data </li></ul><ul><li>List Data </li></ul><ul><li>Codebook </li></ul><ul><ul><li>Basic descriptive statistics on all variables </li></ul></ul><ul><li>Validate duplicate files </li></ul><ul><ul><li>Check consistency after double entry </li></ul></ul>
  29. 29. Export to other programs <ul><li>Click Export data button </li></ul><ul><li>Choose program </li></ul><ul><li>Including Excel, Stata, SPSS </li></ul><ul><li>For Epi-info open .REC file directly </li></ul>
  30. 30. Created By- <ul><li>Orbit Global Services </li></ul><ul><li>Delhi </li></ul>