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Data Quality (cont.)

Design of data collection instruments

Selection and/or construction of measures

Item order

Length of interview

Formatting of instrument

Editing and Coding Interviews

Levels of edits

Interviewer - immediately after interview

Supervisor – check for completeness, appropriate skip patterns

Field Coordinator

Consensus coding

Document coding decisions in Interviewer’s Manual

Preparation of instruments for data entry

Data entry

Data cleaning

Data management

Documentation and storage of data and forms

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