Testing whether barriers to a hypothetical screening test affect unrelated perceived benefits and vice versa: A randomised, experimental study

PATIENT EDUCATION AND COUNSELING

卷:100

Article

Ghanouni, Alex¹  Nuttall, Ella¹  Wardle, Jane¹  von Wagner, Christian¹ 

[1] UCL, Dept Epidemiol & Publ Hlth, London, England

关键词: Public health;    Preventive medicine;    Screening;    Decision making;    Risk communication;    Risk perception;    Affect;    Emotion;    Cognitive biases;    Survey methods;   

DOI  :  10.1016/j.pec.2016.09.007

来源: Elsevier

【 摘 要 】

Objective: Determine whether (fictitious) health screening test benefits affect perceptions of (unrelated) barriers, and barriers affect perceptions of benefits. Methods: UK adults were recruited via an online survey panel and randomised to receive a vignette describing a hypothetical screening test with either high or low benefits (higher vs. lower mortality reduction) and high or low barriers (severe vs. mild side-effects; a 2 x 2 factorial design). ANOVAs compared mean perceived benefits and barriers scores. Screening 'intentions' were compared using Pearson's chi(2) test. Results: Benefits were rated less favourably when barriers were high (mean: 27.4, standard deviation: 5.3) than when they were low (M: 28.5, SD: 4.8; p = 0.010, partial eta(2) = 0.031). Barriers were rated more negatively when benefits were low (M: 17.1, SD: 7.6) than when they were high (M: 15.7, SD: 7.3; p = 0.023, partial eta(2) = 0.024). Most intended to have the test in all conditions (73-81%); except for the low benefit-high barrier condition (37%; p < 0.0005; N = 218). Conclusions: Perceptions of test attributes may be influenced by unrelated characteristics. Practice implications: Reducing screening test barriers alone may have suboptimal effects on perceptions of barriers if benefits remain low; increasing screening benefits may not improve perceptions of benefits if barriers remain high. (C) 2016 The Authors. Published by Elsevier Ireland Ltd.

【 授权许可】

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