Verification in Blaise 4.82 Mark M Pierzchala Sharing your passion - - PowerPoint PPT Presentation

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Verification in Blaise 4.82 Mark M Pierzchala Sharing your passion - - PowerPoint PPT Presentation

Jan 04, 2023 603 likes •741 views

Verification in Blaise 4.82 Mark M Pierzchala Sharing your passion for accurate, efficient surveys Blaise verification is important for: Paper surveys or dumb electronic collection Paper / CATI CAPI Paper / Web Paper /

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SLIDE 1

Verification in Blaise 4.82

Mark M Pierzchala

Sharing your passion for accurate, efficient surveys

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SLIDE 2

Blaise verification is important for:

  • Paper surveys or ‘dumb’ electronic collection
  • Paper / CATI – CAPI
  • Paper / Web
  • Paper / Web / CATI – CAPI
  • If data entry verification is required, this

feature makes it much easier to combine paper and other modes into one instrument

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SLIDE 3

Data Entry Verification

  • For ‘forms-based’ data entry

– Not ‘Item-code (source-code)’ data entry

  • You have to consider routing

– Verify or not verify data on a new path

  • Blind verification is appropriate
  • High-speed first and high-speed second entry
  • Second operator is adjudicator

– Take 1st value; (2) Take 2nd value; (3) Type 3rd value

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SLIDE 4

Data Editing Verification

  • Value added to the traditional Blaise

interactive editing capability

  • Give a reason for changing an existing datum
  • Summarize changes over all forms

– Use the log file data for this

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SLIDE 5

Comparing Verification Styles

Data Entry Verification

  • Blind verification

  • Consistency edits off

  • Beep on [heads down]

  • High speed, everything is on

the numeric keypad

– Get the data entered as fast and accurately as possible

Data Editing Verification

  • Open verification

  • Consistency edits on

  • Beep off [heads up]

  • Whatever it takes ensure

internal data integrity

– Operating with a respondent

  • n the phone

– Considering all edits at once

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SLIDE 6

Implementation of Edits

Item-Code Data Entry Data File Forms- Based Data Entry CATI - CAPI Web Collection

Path: Validation: Range: Consistency: Historic: Cross-record:

  • Yes

Yes

  • Yes

Yes Yes Yes Reduced

  • Yes

Yes Yes Reduced

  • Interactive

Editing

Yes Yes Yes Yes Yes Some | most | all Path: Validation: Range: Consistency: Historic: Cross-record:

Imputation

(other system)

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SLIDE 7

Role of Blaise Instrument

Forms- Based Data Entry CATI - CAPI Web Collection Interactive Editing Blaise instrument No manual review Data File

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SLIDE 8

Power of Interactive Data Editing

  • Edits

– Form-level edits – Ensures within-form data integrity – All levels of edits – Every form is unique

  • Productivity

– Immediate feedback on each datum change – Form is cleaned in one session – Can have the data provider on the phone – When the form is clean, it is clean!

  • Verification: Can now require a reason for a change
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SLIDE 9

Log File

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SLIDE 10

Original Entry

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SLIDE 11

Blind Verification Entry

Original data are not shown Displays first and second values Verification notice

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SLIDE 12

Open Verification Editing

Original data are shown Displays first and second values Verification notice Reason and note