Lynch R, Cohn S
London School of Hygiene and Tropical Medicine, London, UK.
Vox Sang. 2018 May;113(4):350-356. doi: 10.1111/vox.12641. Epub 2018 Feb 9.
The INTERVAL trial aimed to find the optimum frequency of blood donation to enhance blood supplies and maintain donor health. This not only requires biological knowledge, but also an appreciation of donor perspectives, and how their experiences and beliefs might be central if any changes are ever to be made. To address this, trial participants were interviewed about their ideas of blood and the body in relation to their experiences of increased donation frequency.
Thirty in depth face-to-face interviews conducted with blood donors participating in the trial.
Three key themes emerged: ideas about how blood and iron reserves are replenished, and what people did to facilitate this; beliefs about physiological differences relating to age and gender; and practical issues that affected the experience of donation. Overall, participants interviewed welcomed more frequent donation, despite a range of pragmatic concerns.
Despite some practical obstacles, increased donation frequency aligned with participant's ideas about bodily replenishment, the value of donation, and their identity as enduring blood donors. They therefore supported the idea of increasing frequency of donation, independently of the biomedical evidence from the trial itself.
“间隔”试验旨在找出最佳献血频率，以增加血液供应并维持献血者健康。这不仅需要生物学知识，还需要了解献血者的观点，以及如果要做出任何改变，他们的经历和信念可能如何成为核心因素。为解决这一问题，研究人员就献血频率增加的经历，询问了试验参与者对血液和身体的看法。
对参与该试验的献血者进行了30次深入的面对面访谈。
出现了三个关键主题：关于血液和铁储备如何补充的观点，以及人们为促进补充所采取的措施；关于与年龄和性别相关的生理差异的信念；以及影响献血体验的实际问题。总体而言，尽管存在一系列实际问题，但接受访谈的参与者仍欢迎更频繁的献血。
尽管存在一些实际障碍，但增加献血频率与参与者对身体补充、献血价值以及他们作为长期献血者的身份认同的观点一致。因此，他们支持增加献血频率的想法，而不依赖于试验本身的生物医学证据。
