Parameter Correlation with AHI P-valuea Correlation with LSAT P-valuea
Cephalometric variables
SNA - 0.62 0.01 0.18 0.53
SNB - 0.48 0.07 0.13 0.27
ANB - 0.27 0.33 0.33 0.22
PAS - 0.09 0.74 0.38 0.16
MP-H - 0.38 0.16 0.03 0.89
Maxillary and mandibular advancement
Co-A - 0.24 0.39 - 0.57 0.03
Co-B - 0.09 0.74 - 0.61 0.02

aP < 0.05 was considered statistically significant for all analyses.
Wilcoxon signed rank test was used to determine the correlation between the PSG variables and the cephalometric variables for each of the outcome measures.
AHI = Apnea/hypopnea index; LSAT = lowest oxygen saturation; SNA = angle between sella, nasion and subspinale point A; SNB = angle between sella, nasion and supramentale point B; ANB = angle between the maxilla and the mandible; PAS = narrowest distance between the base of the tongue and the posterior pharyngeal wall; MP-H = distance from the mandibular plane to the most anterior point of the hyoid bone; Co-A = amount of maxillary advancement; Co-Pog = amount of mandibular advancement.