Evaluation of the effectiveness of three methods designed to inform patients about side effects Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/r207ts542

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  • The effectiveness of three methods designed to inform patients about digoxin side effects was evaluated. Subjects were randomly assigned to receive information about their digoxin by one of three treatment methods: (1) verbal consultation alone, (2) A.S.H.P. printed leaflet, or (3) both verbal consultation and leaflet. Treatments were administered by a registered pharmacist. Effectiveness of the information was measured by use of a telephone questionnaire designed to assess the subjects ability to use the information given the facts and conditions of a hypothetical case. Telephone questionnaires were completed on 52 of the original 72 subjects entered. All subjects were taking digoxin at time of telephone interview, with 90% of subjects reporting having taken it for greater than 1 year. Subjects1 reported comprehending both the verbal consultation and written leaflet material "very well". Analysis of variance was performed to evaluate the differences in effect between the three treatment methods. Subjects receiving both verbal and written information scored higher (mean=2.40) as compared to those subjects who received only verbal consultation (mean=1.11) or written leaflet alone (mean=1.61). There was no statistically significant difference between the mean scores of subjects receiving verbal versus written information only. The impact of prior side effect information from various sources was evaluated as a possible variable affecting the results. Neither the physician nor pharmacist, as prior information sources, were found to contribute significantly to the treatment towards enabling subjects to recognize and respond more appropriately. These data support the findings of other studies which suggest that written materials are an essential component of programs aimed at educating patients about side effects. There is no evidence to support the use of written materials in place of verbal consultation.
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