. 2014 Sep 16;80(6):490–496. doi: 10.1016/j.bjorl.2014.09.003

Table 4.

Comparison of success and failure rates according to the increase of apnea–hypopnea index.

	Success		Failure		Total	p
	n	%	n	%
AHI 5–15	9	37.5	15	62.5	24	<0.01
AHI 15–30	16	80	4	20	20	0.08
AHI > 30	10	100	0	0	10	0.01

AHI, apnea–hypopnea index per hour of sleep.

Significance value: p < 0.05, chi-squared test.