From: The relationship between upper airway collapse and the severity of obstructive sleep apnea syndrome: a chart review
Effect
AHI
Point estimate
95 % confidence limits
BOT severe vs mild
severe
5.386
2.983
9.727
moderate
1.773
1.030
3.050
BOT moderate vs mild
1.769
0.982
3.186
1.212
0.740
1.985