The reliability of the results of self monitoring of the vitals in the wild using medical devices or wearables or camera based smart phone solutions is subject to variabilities such as position of placement, hardware of the device and environmental factors. In this first of its kind study, we demonstrate that this variability in self monitoring of Blood Pressure (BP), Blood oxygen saturation level (SpO2) and Heart rate (HR) is statistically significant (p<0.05) on 203 healthy subjects by quantifying positional and hardware variability. We also establish the existence of this variability in camera based solutions for self-monitoring of vitals in smart phones and thus prove that the use of camera based smart phone solutions is similar to the use of medical devices or wearables for self-monitoring in the wild.

翻译：本项首次开展的研究表明，在203名健康受试者中，通过量化位置和硬件变异性，使用医疗设备、可穿戴设备或基于摄像头的智能手机解决方案进行野外生命体征自我监测的结果可靠性受放置位置、设备硬件及环境因素等变异性的显著影响（p<0.05）。我们同时证实了基于摄像头的智能手机生命体征自我监测解决方案中存在这种变异性，从而证明在野外环境下使用基于摄像头的智能手机解决方案与使用医疗设备或可穿戴设备进行自我监测具有相似性。