Interview_Techniques - Session IV Interviewing Techniques...

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1 Session IV Interviewing Techniques Session Overview • Overview of different interviewing methods • Standardizing interviews • Interviewer training • Interviewing techniques • Confidentiality
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2 Learning Objectives • Understand the advantages and disadvantages of various interview methods • Know what to address in interviewer training • Recognize good interview techniques • Understand confidentiality concerns from the perspectives of both the respondent and the outbreak investigator Basic Steps of an Outbreak Investigation 1. Verify the diagnosis and confirm the outbreak 2. Define a case and conduct case finding 3. Tabulate and orient data: time, place, person 4. Take immediate control measures 5. Formulate and test hypothesis 6. Plan and execute additional studies 7. Implement and evaluate control measures 8. Communicate findings Role of Interviews in Outbreak Investigations Primary purpose: data collection • Case identification • Risk factor identification • Hypothesis generation
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3 Interviewing Methods 1. Interviewer Administered – Face-to-face – Telephone 2. Self Administered – Mail-out –E m a i l – Web-based Questionnaire Design Interview Method Influenced by: • Length and format of questionnaire • Question types used in a survey
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4 Face-to-Face Interview Advantages: • Higher response rate • Longer survey instrument • Can have more complex skip patterns • More accurate recording of responses – Less item non-response • Appropriate for hard to reach populations (e.g., illiterate, institutionalized) Face-to-Face Interview Disadvantages: •Cos t ly • Potential for interviewer error • Less anonymous than self-administered – Potential for dishonesty • Safety of interviewers Telephone Interview Advantages: • Less costly than face-to-face • Higher response rates than mailed • Quicker access to participants • Supervision of interviewers feasible
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5 Telephone Interview Disadvantages: • Lower response rates than face-to-face • Shorter questionnaires used • Unable to capture important visual information ( e.g., rash, working conditions) • Under-coverage (e.g., population without phones) Mailed Questionnaire Advantages: • More anonymous • May collect more honest responses • No interviewer error • Less expensive • Respondent has more time to think about question Mailed Questionnaire Disadvantages: • Questionnaire must be simple • Higher item non-response • Lower response rate • Data collection takes more time • Sample population must be literate • Coverage / frame deficiencies
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6 Web-based Questionnaire Advantages: • Among some populations, most people may have access to the Internet / e-mail • Inexpensive and fast • No data entry required – Improves data quality • Many vendors send data in a variety of
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This note was uploaded on 12/08/2010 for the course USE 3425 taught by Professor Raman during the Spring '10 term at Punjab Engineering College.

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Interview_Techniques - Session IV Interviewing Techniques...

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