Table 6. Comparison of self-reported health conditions and self-reported anthropometric characteristics on the Somni-Sage® questionnaire, according to OSA status categories for female participants, n=144.

(Negative OSA diagnosis: AHI < 5; Possible OSA diagnosis: ≥5 AHI ≤10; Definite OSA diagnosis: AHI > 10)

Somni-Sage® parameter		Definite OSA diagnosis n (%) 77 drivers	Possible OSA diagnosis n (%) 22 drivers	Negative OSA diagnosis n (%) 45 drivers	p-value
EDS**		28 (36)	8 (36)	18 (40)	0.944
Witnessed Apneas**		24 (31)	7 (32)	16 (36)	0.912
Urinate at night**		33 (43)	9 (41)	11 (24)	0.109
Hypertension**		33 (43)	9 (41)	11 (24)	0.109
Diabetes**		11 (14)	4 (18)	6 (13)	0.896
Heart Problem**		4 (5)	1 (4.5)	1 (2)	0.857
Heart Operation**		3 (4)	1 (4.5)	1 (2)	1.000
Heart Burn**		15 (19.5)	9 (41.0)	11 (24.4)	0.118
Age [mean ±SD]		47.4 [8.2] 76 drivers	44.8 [9.1]	41.1 [10.4] 44 drivers	0.008
BMI [mean ±SD]		37.7 [7.0] 74 drivers	36.5 [8.3]	33.1 [6.4]	0.004
AHI [mean ±SD]***		27 [21]	8 [1]	2 [1]	<0.001
ESS [mean ±SD]		4.7 [3.9] 76 drivers	4.1 [3.7]	6 [3.6] 7 drivers	0.361
Neck size [mean ±SD]		Insufficient data
Somni-Sage® Class	Higher Risk (Class 1*)	51 (66)	14 (64)	24 (53)	0.352
	Lower Risk (Non-class 1)	26 (34)	8 (36)	21 (47)

AHI = apnea hypopnea index; BMI = body mass index; COPD = chronic obstructive pulmonary disease; EDS =excessive daytime sleepiness; ESS = Epworth sleepiness scale;

^*Class 1= high priority for further testing (PSG); Non-class 1= lower priority for further testing (PSG)

^**Number and (%) of participants that answered, “yes” on the Somni-Sage® questionnaire

^***AHI data are available only for those tested with polysomnography.

EDS was considered positive if a driver had an Epworth Sleepiness Scale (ESS) ≥10 and/or answered “often” to the following question: “Do you become drowsy while driving?”