Table 4 Correlation between clinical and polysomnographic variables and hyoid bone position
From: Hyoid bone position as an indicator of severe obstructive sleep apnea
Predictor variables | r | p-value |
|---|---|---|
Age (years) | 0.096 | 0.270 |
BMI | 0.158 | 0.072 |
Neck circumference (cm) | 0.166 | 0.089 |
Total AHI | 0.318 | 0.001** |
Supine AHI | 0.313 | 0.001** |
Non-supine AHI | 0.312 | 0.001** |
REM AHI | 0.141 | 0.107 |
NREM AHI | 0.338 | 0.001** |
Mean SpO2 | − 0.263 | 0.003** |
Lowest SpO2 | − 0.208 | 0.017* |
Time below 90% SpO2 (%) | 0.327 | 0.001** |
REM SpO2 | 0.002 | 0.981 |
NREM SpO2 | − 0.268 | 0.002** |
REM arousal index | 0.167 | 0.064 |
NREM arousal index | 0.276 | 0.002** |
Respiratory arousal index | 0.329 | 0.001** |
Total arousal index | 0.323 | 0.001** |
Total sleep time (mins) | − 0.145 | 0.095 |
Sleep efficiency (%TST) | − 0.163 | 0.061 |
Sleep latency (mins) | − 0.018 | 0.833 |
REM latency (mins) | − 0.037 | 0.674 |
Sleep stage I (%TST) | 0.276 | 0.001** |
Sleep stage II (%TST) | − 0.208 | 0.016* |
Sleep stage III + IV (%TST) | − 0.094 | 0.282 |
REM sleep (%TST) | − 0.020 | 0.819 |
Time of supine position (% TST) | − 0.089 | 0.309 |