Data collection methods
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This document discusses different methods for collecting data, including computerized methods. It describes Computer-Assisted Telephone Interviewing (CATI), where questionnaires are programmed and displayed on a computer for telephone interviews. It was developed in 1970 and is widely used for large surveys. Computer-Assisted Personal Interviewing (CAPI) involves interviewers using portable computers instead of paper to directly enter data. Computer-Assisted Self-Interviewing (CASI) allows respondents to complete surveys themselves on a computer without an interviewer.
Data collection methods
- 1. DATA COLLECTION METHODS By: Bishal Kumar Shaw IIHMR, Bangalore PGDHM//2016-18//180
- 2. Type Data collection methods ■ Face‐to‐face interviews ■ Mail questionnaires ■ Web‐based questionnaires ■ Computerized Data Collection
- 3. Computerized Data Collection Methods ■ CATI (Computer-Assisted Telephone Interviewing) ■ CAPI (Computer-Assisted Personal Interviewing) ■ CASI (Computer-Assisted Self-Interviewing)
- 4. Computer-Assisted Telephone Interviewing ■ It was developed in 1970 by Chilton Research Service of Randnor, Pennsylvania. ■ The Questionnaire is programmed and displayed on a terminal or micro computer screen. ■ 1st widely applied technology ■ Used to carry out the large scale survey. ■ It includes Selection of the sample by means of a RDD (Random Digit Dialling).
- 5. Computer-Assisted Telephone Interviewing■ Advantages: – Less time consuming – Less expensive – Better accessibility. – Higher response rate than the mail questionnaire. – Can be fully automated using CATI (Computer Assisted Telephone Interviewing) & saves data processing time. ■ Disadvantages: – Theoretically limited to landline phone users – The response rate is not as high as the face‐to‐face interview. – Excludes people who do not have a phone, or only have cell phones
- 6. ■ Computer Assisted Personal Interviewing, is a idea instead of collecting data on paper questionnaires, interviewers use portable computers to enter data directly. ■ Computer-assisted interviewing has been used in the past for, for example, telephone surveys but it is only in the last five years or so that it has been used for face-to-face interviews. ■ Example of CAPI is The British Crime Survey. Computer-Assisted Personal Interviewing
- 7. Computer-Assisted Personal Interviewing■ Advantages: – Saves time involved in processing the data. – Saves the interviewer from carrying around hundreds of questionnaires. ■ Disadvantages: – Can be expensive to set up. – Requires the interviewers to have computer and typing skills.
- 8. Computer-Assisted Self-Interviewing ■ Computer assisted self-interviewing (CASI) is a technique for survey data collection in which the respondent uses a computer to complete the survey questionnaire without an interviewer administering it to the respondent. ■ The questions are pre-recorded and the audio is played back for the respondent one question at a time (audio computer assisted self-interviewing—ACASI). ■ Characteristics of this interviewing technique are: – Help screens and courteous error messages are provided. – Colourful screens and on and off-screen stimuli. – Also used to conduct business-to-business research.
- 9. ■ Advantages – Cost effective- No need to recruit or pay interviewers. – Respondents are able to fill in the questionnaires themselves. – No need to transcribe the results into a computer form. – The computer program can be constructed so as to place the results directly in a format. – Can be placed on a web site, potentially attracting a world-wide audience. ■ Disadvantages – The survey is likely to attract only respondents who are "computer savvy", thus introducing potential bias to the survey. – The survey can miss feedback and clarification/quality control. Computer-Assisted Self-Interviewing
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