AHI	Apnea-Hypopnea Index
COPD	Chronic obstructive pulmonary disease
CSA	Central sleep apnea
CT	Computed Tomography
ECG	Electrocardiography
fR	Respiratory frequency
ICU	Intensive care unit
LOAs	Limits of agreement
MEWS	Modified Early Warning Score
MOD	Mean of difference
mos	Months
MRI	Magnetic Resonance Imaging
NEWS	National Early Warning Score
OSA	Obstructive sleep apnea
PET	Positron Emission Tomography
PPG	Photoplethysmography
RGB	Red green blue
RIP	Respiratory inductive plethysmography
ROC	Receiver operating characteristic
SQI	Signal quality index
UWB	Ultra-wideband
VT	Tidal volume