TABLE 3 Description and Comparison of Data-Collection Methodologies

TABLE 3 Description and Comparison of Data-Collection Methodologies

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  In-person Telephone Mail Internet
Description Interviewer travels to respondent's home or office and administers questions in face-to-face interview Interviewer contacts respondent and administers questions over the telephone Questionnaire mailed to respondent and returned by mail, or data are retrieved by telephone Respondent completes survey on web
Coverage Most complete Omits nontelephone households Similar to in-person depending on how the addresses were obtained Only households with internet connection or access to internet
Response rate Highest of all modes Intermediate Among the lowest Among the lowest
Data quality Highest of all modes Intermediate Lowest of all modes Intermediate; mixed results
Cost Most expensive (this often leads to geographically clustered sample cases and a reduction in the effective sample size) Intermediate Among least expensive Among least expensive; has a high startup cost compared with data-collection cost