title: Reliability and validity of measures used to elicit health expectations, values, tradeoffs and intentions to be immunized for hepatitis B.
abstract: We evaluated measures eliciting health expectations, health values, health tradeoffs and intentions to take hepatitis B (HepB) vaccine among health science and technology students. We tested 23 students two weeks apart and then surveyed a cross-section of 373 students in 6 health disciplines. In a subsequent prospective study, 863 students were tested, invited to be immunized, and followed to observe who presented for immunization. The test-retest reliability coefficients exceeded 0.80 for all but the health value measures. All but the health values measures discriminated between those with strong and weak intentions to be immunized. Expectation measures discriminated among disciplines with different risks of exposure to blood and body fluids. The intention, health tradeoff and expectation measures discriminated between those who did and did not present themselves for immunization. We conclude that all but the health values measures met acceptable standards of reliability and validity. Health value tradeoff measures are more discriminating than health value measures.
authors.affiliation: University of Ottawa, Faculty of Health Sciences, School of Nursing, Ontario, Canada.
authors.forename: A M
authors.initials: AM
authors.lastname: O'Connor
authors.forename: R A
authors.initials: RA
authors.lastname: Pennie
mesh_terms: D000488:Allied Health Personnel / Q000523:psychology*; D003430:Cross-Sectional Studies; D003657:Decision Making; D015438:Health Behavior; D017325:Hepatitis B Vaccines; D006801:Humans; D011446:Prospective Studies; D015203:Reproducibility of Results; D013334:Students / Q000523:psychology*
chemical_list: D017325:Hepatitis B Vaccines