. 2017 Nov 6;5(11):e169. doi: 10.2196/mhealth.8238

Table 9.

Contrast among control and obstructive sleep apnea (OSA) severity groups on a male (N=241) population.

Feature		Control (apnea-hypopnea index, AHI<10), n=81	Mild obstructive sleep apnea, OSA (AHI 10-30), n=87		Severe OSA (AHI>30), n=73
		Median	Median	P value	Median	P value
Clinical variables
	Weight	86.0	90.0	.24	99.0	.001^a
	Body mass index	27.3	28.9	.01^a	31.4	.001^a
	Age	42.0	51.0	.001^a	48.0	.02^a
	Cervical perimeter	41.0	42.0	.001^a	44.0	.001^a
Speech features
	Formant, F3/i/	2707.0	2682.0	.05^a	2642.0	.03^a
	Bandwidth, BW1/o/	94.0	79.0	.001^a	85.0	.10
	BW3/o/	98.0	136.0	.01^a	107.0	.10
	BW2/a/	118.0	125.0	.08	148.0	.01^a
	BW3/e/	170.0	201.0	.10	140.0	.03^a

^aThere are significant differences between OSA groups at the .05 level.