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. 2019 May 7;11:103–108. doi: 10.2147/OAEM.S198842

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© 2019 Li et al.

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Mean difference in respiratory rate per patient. Difference was calculated by subtracting Philips wearable biosensor-derived respiratory rate from capnography-derived respiratory rate. Mean difference was calculated by averaging the minute-by-minute differences. Error bars represent SDs. Patient #4 appears to be an outlier.