Robb Kathryn A, Campbell John, Evans Philip, Miles Anne, Wardle Jane
Cancer Research UK Health Behaviour Research Centre, Department of Epidemiology and Public Health, University College London, London, UK.
J Health Psychol. 2008 Sep;13(6):744-53. doi: 10.1177/1359105308093858.
The study sought to modify comparative optimism about colorectal cancer in a community sample using a method of providing risk information found to be effective in a laboratory setting. The 3185 adults from General Practice lists were randomized to three groups: (1) control--no information; (2) risk information leaflet; (3) risk and screening information leaflet. Significant comparative optimism and high numeric estimates of absolute risk were found. Risk factor information did not reduce optimistic beliefs nor modify estimates of risk. Interest in screening was high overall and not influenced by the information. Comparatively optimistic risk perceptions appear resistant to change in community settings.
该研究试图通过一种在实验室环境中被证明有效的提供风险信息的方法，来改变社区样本中对结直肠癌的比较性乐观态度。从全科医疗名单中选取的3185名成年人被随机分为三组：（1）对照组——不提供信息；（2）风险信息传单组；（3）风险及筛查信息传单组。研究发现了显著的比较性乐观态度以及对绝对风险的高数值估计。风险因素信息并未降低乐观信念，也未改变风险估计。总体而言，对筛查的兴趣较高，且不受信息影响。在社区环境中，比较性乐观的风险认知似乎难以改变。
