Quality Control:

A comprehensive EMRB Quality Control System Works at three Levels

Pre Field

• Study Briefing.
• Interviewers Training.
• Mock Calls/role play/Pilot Testing (Field work-Back Checks-Data entry. …etc.)

During Field

• Field Supervision/Spot Checks/Field Accompaniments
• Call Backs & Back checks (100%) by telephone & Field Checks
• Each Interviewer should not do more than 20% of the sample

After Field

• Data Validation
• Logic Checks
• Random re-punch