The Egyptian Journal of Otolaryngology

Table 4 Correlation between AHI and (awake fiberoptic nasoendoscopy, multi-view videofluoroscopy, and DISE) regarding grade of collapse

From: The role of video-fluoroscopy in the assessment of obstructive sleep apnea patients: comparative study

Grade of collapse	AHI
Grade of collapse	r	P
Awake nasoendoscopy
Retropalatal level	0.521	0.017*
Retroglossal level	0.14	0.072
Hypopharyngeal level	0.213	0.33
Videofluoroscopy
Retropalatal level	0.53	0.024*
Retroglossal level	0.39	0.084
Hypopharyngeal level	0.319	0.37
DISE
Retropalatal level	0.543	0.047*
Retroglossal level	0.351	0.50
Hypopharyngeal level	0.02	0.85

r, Spearman correlation coefficient
^*Statistically significant (if P < 0.05)

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