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. 2022 Feb 16;9(1):e30091. doi: 10.2196/30091

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©Grace Hawthorne, Neil Greening, Dale Esliger, Samuel Briggs-Price, Matthew Richardson, Emma Chaplin, Lisa Clinch, Michael C Steiner, Sally J Singh, Mark W Orme. Originally published in JMIR Human Factors (https://humanfactors.jmir.org), 16.02.2022.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Human Factors, is properly cited. The complete bibliographic information, a link to the original publication on https://humanfactors.jmir.org, as well as this copyright and license information must be included.

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Associations within the Stable group (n=49) between (A) HR signal quality and BMI and (B) HR data quality and BMI, and associations within the AECOPD group (n=35) between (C) RR data quality and waist circumference and (D) RR data quality and BMI. The shaded area indicates 95% CI and P values and correlations calculated using Spearman ρ. AECOPD: acute exacerbation of chronic obstructive pulmonary disease; HR: heart rate; RR: respiratory rate.