"These findings are consistent with previous studies that have found relationships between physical activity and health, as well as physical function. "The average number of steps recorded per day by subjects in this study correlated significantly with several attributes of the patients' self-reported states at the conclusion of the study, including their overall health, physical function, fatigue, and KCCQ (Kansas City Cardiomyopathy) and SAQ (Seattle Angina) scores," the researchers wrote. The researchers also wanted to see how the information gathered by the Fitbit tracker compared to that gathered from patient surveys at the end of the study period. Part of this superior adherence came down to the fact that, because the researchers were able to easily access the activity data, they could identify which patients were losing interest in wearing their Fitbit and send them a reminder. The rate of attrition in adherence was measured at a 0.09% decrease per day - meaning that the vast majority of patients were still using their Fitbits almost as much at the end of the three-month study as they were at the start. As the report notes, this is "substantially higher than those previously reported in telemonitoring studies using similar study periods." Participants were asked to wear a Fitbit Charge 2 for 90 days to monitor their activity, heart rate, and sleep.Īt the end of the time period, it was found that patients had a high level of device adherence - 90% median usage. In the study, researchers recruited and collected data from 186 Cedars-Sinai Medical Center patients with ischemic heart disease (IHD). However, previous studies have shown that activity trackers are capable of accurately documenting health indicators such as physical activity, are a popular low-cost option with older patients, and often have higher adherence rates than other devices." 90% Adherence Rate "Little work has been done to demonstrate how readily available commercial devices may limit intervention burden by automating data collection, such as passive accelerometry. "Studies have indicated that device fatigue limits adherence, a phenomenon known as the law of attrition," the researchers wrote. They observed two things: 1) High rates of adherence and very low attrition among a group of mid-risk cardiovascular patients instructed to wear Fitbit devices, and 2) Data from the Fitbit could be used to identify trends that call for clinical intervention. However, in a new study - published in the Journal of the American Medical Informatics Association (JAMIA) - Cedars-Sinai and UCLA researchers focused on consistency and adherence to continuous tracking device use, rather than accuracy. Healthcare providers have historically regarded consumer-grade wearables with caution because they don't trust the data the devices gather and are naturally reluctant to make clinical decisions based on what might be inaccurate information. Researchers at Cedars-Sinai Medical Center and University of California, Los Angeles (UCLA) have found that a consumer-grade wearable - namely, the Fitbit, a personal activity tracker - can be a useful remote patient monitoring (RPM) device for patients dealing with heart issues.
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