Grebin Sabrina Zanatta, Echeveste Márcia Elisa Soares, Magnago Patrícia Flores, Tanure Raffaela Leane Zenni, Pulgati Fernando Hepp
Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil.
Cad Saude Publica. 2018 Aug 20;34(8):e00074417. doi: 10.1590/0102-311X00074417.
Studies have shown the importance of including the user's experience in measuring the usability of medical devices. Still, the user's assessment depends on the context of use for the treatment received. To measure the usability in such a way as to separate these effects and understand the sources affecting users' perceptions, the article proposes an analytical strategy that assesses the effect of the context of use on measuring the device's usability. Next, we create indicators that are free of these effects to understand the overall assessment of the device. Multivariate analysis of variance and exploratory factor analysis are used to achieve the objectives. The study is illustrated by means of a survey of 200 hemodialysis patients in hospitals and clinics in Porto Alegre, Rio Grande do Sul State, Brazil. The results suggest that assessment of the medical device differs (p < 0.05) according to the setting, fistula site, and patient's sex, age, and schooling. The setting influenced the most variables, including the degree of trust in the procedures. Three indicators were created: procedures, treatment setting, and device characteristics. The indicators allowed assessing which equipment brands, types of procedures, and treatment settings provide the best results. The method can be replicated in the assessment of medical devices, training health administrators, and assessing usability through summary indicators, besides identifying aspects to improve usability in medical treatment.
研究表明，在衡量医疗设备的可用性时纳入用户体验非常重要。然而，用户的评估取决于所接受治疗的使用情境。为了以一种能够区分这些影响并了解影响用户认知的因素的方式来衡量可用性，本文提出了一种分析策略，该策略评估使用情境对衡量设备可用性的影响。接下来，我们创建不受这些影响的指标，以了解对设备的总体评估。使用方差的多变量分析和探索性因素分析来实现这些目标。通过对巴西南里奥格兰德州阿雷格里港的医院和诊所的200名血液透析患者进行调查来说明该研究。结果表明，根据使用场所、瘘管部位以及患者的性别、年龄和受教育程度，对医疗设备的评估存在差异（p < 0.05）。使用场所对最多的变量有影响，包括对操作程序的信任程度。创建了三个指标：操作程序、治疗场所和设备特性。这些指标可以评估哪些设备品牌、操作程序类型和治疗场所能提供最佳效果。除了识别改善医疗中可用性的方面外，该方法还可用于医疗设备评估、培训卫生管理人员以及通过汇总指标评估可用性。
