Table 1. Demographics and clinical description of the Firefly training and test datasets.

Variable	Training set	Test set
Subjects (% male)	128 (52%)	120 (68%)
Age median [mean, SD] (years)	52 [49, 15]	54 [52, 14]
AHI median [mean, SD] (events/hour)	7 [13, 18]	14 [20, 20]
PLM median [mean, SD] (events/hour)	1 [7, 15]	2 [9, 17]
BMI median [mean, SD] (kg/m2)	26.3 [27.1, 5.2]	27.6 [28.2, 5.5]
Subjects by severity category
Normal AHI <5	59 (46%)	30 (25%)
Mild 5≤ AHI <15	30 (23%)	30 (25%)
Moderate 15≤ AHI <30	20 (16%)	30 (25%)
Severe AHI ≥30	19 (15%)	30 (25%)

AHI, apnea hypopnea index; PLM, periodic limb movement; BMI, body mass index; SD, standard deviation.