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Validity of the Polar M430 Activity Monitor in Free-Living Conditions: Validation Study

Validity of the Polar M430 Activity Monitor in Free-Living Conditions: Validation Study

The hip-worn ActiGraph VM had the strongest correlation. The highest ICC agreement was shown for the Actiheart in the lower position, with a poor to good ICC.

André Henriksen, Sameline Grimsgaard, Alexander Horsch, Gunnar Hartvigsen, Laila Hopstock

JMIR Form Res 2019;3(3):e14438

Accuracy of Samsung Gear S Smartwatch for Activity Recognition: Validation Study

Accuracy of Samsung Gear S Smartwatch for Activity Recognition: Validation Study

accelerometer values.Table 3Description of the features extracted from the raw data.FeatureDescriptionMean of vector magnitude (MVM)Sample MVM in the windowStandard deviation of vector magnitude (SDVM)SDVM in the windowPercentage of the power of the vector magnitude (VM

Anis Davoudi, Amal Asiri Wanigatunga, Matin Kheirkhahan, Duane Benjamin Corbett, Tonatiuh Mendoza, Manoj Battula, Sanjay Ranka, Roger Benton Fillingim, Todd Matthew Manini, Parisa Rashidi

JMIR Mhealth Uhealth 2019;7(2):e11270

Calibrating Wrist-Worn Accelerometers for Physical Activity Assessment in Preschoolers: Machine Learning Approaches

Calibrating Wrist-Worn Accelerometers for Physical Activity Assessment in Preschoolers: Machine Learning Approaches

For this study, data were outputted as the vector magnitude (VM) counts, which is the square root of the sum of squares of each axis of acceleration data. Nonwear time was detected using the Choi wear time validation algorithm [28].

Shiyu Li, Jeffrey T Howard, Erica T Sosa, Alberto Cordova, Deborah Parra-Medina, Zenong Yin

JMIR Form Res 2020;4(8):e16727

The Deep Learning–Based Recommender System “Pubmender” for Choosing a Biomedical Publication Venue: Development and Validation Study

The Deep Learning–Based Recommender System “Pubmender” for Choosing a Biomedical Publication Venue: Development and Validation Study

An original representation of A is represented as a matrix V={v1,…,vm}T, which is the concatenation of the words’ vectors. Due to the different sizes of abstracts, we set m as the maximum count of words in an abstract.

Xiaoyue Feng, Hao Zhang, Yijie Ren, Penghui Shang, Yi Zhu, Yanchun Liang, Renchu Guan, Dong Xu

J Med Internet Res 2019;21(5):e12957

Peer Mentorship via Mobile Phones for Newly Diagnosed HIV-Positive Youths in Clinic Care in Khayelitsha, South Africa: Mixed Methods Study

Peer Mentorship via Mobile Phones for Newly Diagnosed HIV-Positive Youths in Clinic Care in Khayelitsha, South Africa: Mixed Methods Study

ART: antiretroviral therapy; VL 1: first viral load.Table 3Linkage, retention in care, and viral load outcomes.MetricVirtual mentors (VM)Matched controls (MC)Linkage to ARTa care, n (%)28 (80)30 (43)Of those linked, Days to linkage to ART care, median (IQRb

Damian Hacking, Zodwa Mgengwana-Mbakaza, Tali Cassidy, Pumeza Runeyi, Laura Trivino Duran, Ruth Henwood Mathys, Andrew Boulle

J Med Internet Res 2019;21(12):e14012

Statins and Fibrates for Diabetic Retinopathy: Protocol for a Systematic Review

Statins and Fibrates for Diabetic Retinopathy: Protocol for a Systematic Review

We will also contact manufacturers and specialists in the field of ophthalmology.Selection of StudiesTwo authors (VM and CGF) will independently read the references and select the studies according to the inclusion and exclusion criteria.

Vania Mozetic, Carolina Gomes Freitas, Rachel Riera

JMIR Res Protoc 2017;6(2):e30