Table 1.

Details of datasets considered in this study.

Name of Dataset	Number of individuals	Demographics	Dates	Purpose
Sleep study respiratory rate validation data set	28	Mean age: 48.9 yr (53.6% fem.)	Oct 17−Nov 6, 2019 & Mar 9−May 29, 2020	To obtain respiratory rate ground truth data for validation of the algorithm.
General population nocturnal respiratory rate data set	10,000	Ages 20−69 yr (50% fem.)	Nov 1−14, 2020	To study respiratory rate variation with age and sex, to establish transverse benchmarks, and to study longitudinal variability.
Longitudinal nocturnal respiratory rate data set from COVID-19 subjects	3,236	Mean age: 42.25 yr (77.6% fem.)	Feb 28−Nov 13, 2020	To collect COVID-19 information from Fitbit users, including symptoms and dates.