Refusal and information bias associated with postal questionnaires and face-to-face interviews in very elderly subjects.
Annual Scientific Meeting of the American Geriatrics Society. Washington, D,C, USA, 1992/11/16.
Our objectives were (1) to analyze the refusal bias associated with postal questionnaires and face to-face interviews and (2) to compare responses elicited from a postal questionnaire with those provided by a face-to-face interview in subjects over 75 years of age.
Our methods included a postal questionnaire sent to a representative sample of community-dwelling elderly individuals (n=842).
All subjects were also invited to participate in an in-home interview conducted by a trained nurse.
One hundred and six subjects (12.6%) were nonrespondents to the postal questionnaire.
These nonrespondents were more cognitively impaired, more disabled, and showed a higher 1-year mortality rate (13.2 versus 5.2%) than respondents.
Late respondents who needed a reminder letter were similar to nonrespondents.
One hundred and eighty-seven subjects (22.2%) refused to participate in the home interview.
These nonparticipants were similar to the participants on age, sex, 1-year mortality rate, and responses given to all but two postal questions.
Comparison of postal questionnaire responses and face-to-face responses revealed that agreement was substantial to moderate for factual information (kappa=0.41 to 0.80) but poor for clinical information (depression, cognitive impairment, disability).
A short index including age, sex, and six questions on disability was useful in identifying disabled subjects by a postal questionnaire. (...)
Mots-clés Pascal : Questionnaire, Poste, Entretien, Refus, Qualité, Information, Epidémiologie, Méthodologie, Evaluation, Vieillard, Homme, Etude comparative, Biais
Mots-clés Pascal anglais : Questionnaire, Postal service, Interview, Denial, Quality, Information, Epidemiology, Methodology, Evaluation, Elderly, Human, Comparative study
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0420266
Code Inist : 002B30A01A1. Création : 10/04/1997.