Speech Signal and Facial Image Processing for Obstructive Sleep Apnea Assessment

Table 3

AHI estimation using craniofacial measures.

Feature	MAE	Correlation coefficient (CC)
Uncalibrated craniofacial features	12.56	0.37
Uncalibrated craniofacial features + clinical variables	11.97	0.45

The correlation coefficients (CC) are significant beyond the 0.001 level of confidence.