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The partial questionnaire design for case‐control studies
Author(s) -
Wacholder Sholom,
Carroll Raymond J.,
Pee David,
Gail Mitchell H.
Publication year - 1994
Publication title -
statistics in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.996
H-Index - 183
eISSN - 1097-0258
pISSN - 0277-6715
DOI - 10.1002/sim.4780130523
Subject(s) - confounding , statistics , disjoint sets , computer science , missing data , quality (philosophy) , econometrics , medicine , mathematics , philosophy , epistemology , combinatorics
Abstract We propose an alternative to a long questionnaire that may increase quality while reducing the cost and effort of participants and researchers. In the ‘partial questionnaire design’, information about the exposure of interest is obtained from all subjects, while zero, one, or more disjoint subsets of questions about possible confounders are asked to randomly selected subgroups. The proposed analyses exploit the fact that the uncollected data can be considered to be missing at random. We show that it is possible to obtain high efficiency for estimating the effect of exposure of interest, adjusted for confounding, while substantially shortening average questionnaire length.