Table 2. PSG pooled data for the 248 recordings used in training and validation: breakdown of SDB event types per severity class.

Severity class	# Hypopneas	# Central apneas	# Mixed apneas	# Obstructive apneas
Normal	692	66	6	32
Mild	2,833	174	17	257
Moderate	5,717	408	69	826
Severe	9,034	883	568	3,100

PSG, polysomnography; SDB, sleep-disordered breathing.