The Time Interval between Death and Next-of-Kin Contact and Its Effects on Response Rates and Data Quality

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Abstract
The relation of the interval of time between death and next-of-kin contact to outcome variables including response rates and data quality was examined in a nationallyrepresentative sample of 17,713 deaths of persons 25 years of age or older that occurred in the United States in 1986. For most of the outcome variables examined,the length of time had little effect, although there was a small decrease in the responserate and a small increase in the refusal rate for contact 40 or more weeks after death.The small decrease in the response rate and small increase in the refusal rate for longest interval examined held for most decedent background characteristics examined(age, race, cause of death, and type of informant.) Authorizations to contact health carefacilities signed by the respondents decreased slightly as the interval increased.The rate of returned mailed questionnaires passing quality and consistency edits increased slightly with time since death. Substantive responses (versus blanks, don't knows, etc.) decreased as time since death increased. Certain questions such as those on income and birth control pill use showed a decrease in response with time since death. Overall,the effects of longer time intervals between death and next-of-kin contact were less than expected on response rates and data quality, although our findings may reflect the high overall response rate, 90.5%, leaving little opportunity for significant areasnonresponse. Am J Epidemiol 1991 ;134:1454-62.

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