检查压力介导反射光谱在健康成年人多状态样本中的设备内部和设备间的可靠性
Susan B Sisson1, Emily Helms1, Shanon Casperson2
1Department of Nutrition Sciences, University of Oklahoma Health Sciences Centerhttps://ror.org/0457zbj98 , Oklahoma City, OK, USA.
Public health nutrition
|September 25, 2025
概括
这项研究评估了Veggie Meter®的可靠性,Veggie Meter®是一种通过压力介导反射光谱测量胡卜素的设备. 虽然设备内部可靠性中度至高,但设备之间的差异超过了研究假设.
科学领域:
- 营养科学 营养科学
- 生物医学工程 生物医学工程
- 频谱学应用 频谱学应用
背景情况:
- 准确测量饮食中的胡卜素对于评估水果和蔬菜摄入量至关重要.
- 蔬菜计®使用压力介导反射光谱进行非侵入性胡卜素评估.
- 了解设备可靠性对于其在研究和临床环境中广泛采用至关重要.
研究的目的:
- 为了评估Veggie Meter®的设备内部可靠性.
- 评估Veggie Meter®在多个站点的设备间的可靠性.
- 将测量的可靠性指标与预定义的假设进行比较.
主要方法:
- 在八个美国地点进行了横截面研究.
- 282名参与者接受了五次反平衡指部扫描,每次使用两个Veggie Meter®设备.
- 使用类内相关系数 (ICC),变化系数 (CV) 和绝对相对差异 (ARD) 评估了设备内部和设备间的可靠性.
主要成果:
- 设备内部的ICC值从0.77到0.99不等,表明中等到高可靠性.
- 设备内部平均CV为8.8%,其中63%的设备超过了6%的假设.
- 设备间的ICC从0.58到0.94.4不等. 设备间ARD的平均值为13.9%,超过了10%的假设,尽管63%的网站显示同等性低于10%.
结论:
- 根据ICC,Veggie Meter®在设备内部和设备间显示了中等至高的可靠性.
- 观察到的设备内部差异平均为9% (高达14%),而设备间差异平均为14% (高达22%).
- 虽然ICC表明可靠性很好,但CV和ARD指标表明研究设计中需要考虑的潜在变异性.
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