title: The questionnaire as a research tool.
abstract: This article explores the design, development and application of questionnaires in primary care research. Particular attention is given to the need for care in sampling, piloting and validating, along with practical information on the importance of identifying sources of error and minimizing their damaging effect.
authors.affiliation: Department of Primary Medical Care, University of Southampton, UK.
authors.forename: S
authors.initials: S
authors.lastname: Lydeard
mesh_terms: D015982:Bias; D006801:Humans; D010865:Pilot Projects; D015203:Reproducibility of Results; D012106:Research / Q000295:instrumentation* / Q000592:standards; D012494:Sampling Studies; D011795:Surveys and Questionnaires / Q000592:standards*