Table 4.
Intra-examiner and inter-examiner reliability of lateral cephalometric radiograph measurements
| Group | Variable | Intra-examiner reliability: ICC | Inter-examiner reliability: ICC |
|---|---|---|---|
| Maxilla/midface | SNA | 0.94 | 0.75 |
| ANS-PNS (mm) | 0.98 | 0.37 | |
| Co-ANS (mm) | 0.99 | 0.93 | |
| N/S^ANS/PNS palatal plane angle (°) | 0.93 | 0.49 | |
| Ba-S-N (°) | 0.97 | 0.59 | |
| S-N anterior cranial base (mm) | 0.98 | 0.98 | |
| S-Ba posterior cranial base (mm) | 0.99 | 0.95 | |
| Ba-A (mm) | 0.99 | 0.95 | |
| Ba-N-A (°) | 0.93 | 0.81 | |
| FH^N/A maxillary depth (°) | 0.86 | 0.68 | |
| PNS-Ba (mm) | 0.97 | 0.27 | |
| A-N true vertical (mm) | 0.90 | 0.87 | |
| OP^FH (°) | 0.94 | 0.66 | |
| OP^SN (°) | 0.97 | 0.68 | |
| Mandible | SNB | 0.98 | 0.76 |
| Ba-B (mm) | 1.00 | 0.95 | |
| Ba-N-B (°) | 0.98 | 0.82 | |
| FH-N-Po facial angle/mandibular depth angle (°) | 0.91 | 0.78 | |
| Co-Go-Gn gonial angle (°) | 0.93 | 0.83 | |
| Co-Go (mm) | 0.84 | 0.70 | |
| S-Go (mm) | 0.94 | 0.88 | |
| Co-Pog (mm) | 0.99 | 0.97 | |
| S/N^Go/Gn (°) | 0.97 | 0.88 | |
| B-N true vertical (mm) | 0.94 | 0.83 | |
| Pg-N true vertical (mm) | 0.95 | 0.87 | |
| Y-axis length (mm) | 0.99 | 0.98 | |
| Y-axis angle (°) | 0.99 | 0.79 | |
| Inter-maxillary relationship | ANB | 0.96 | 0.90 |
| Wits appraisal (mm) | 0.95 | 0.70 | |
| Co-Pog-Co-ANS | 0.99 | 0.45 | |
| Facial height | TFH (N-Me) (mm) | 1.00 | 0.98 |
| UFH (N-ANS) (mm) | 0.99 | 0.93 | |
| LFH (ANS-Me) (mm) | 1.00 | 0.98 | |
| LFH/TFH (%) | 0.99 | 0.77 | |
| PFH (S-Go) (mm) | 0.92 | 0.82 | |
| AFH (N-Pg) (mm) | 1.00 | 0.98 | |
| PFH/AFH (%) | 0.92 | 0.85 | |
| Hyoid | MP-H (mm) | 0.99 | 0.97 |
| H-Rg (mm) | 1.00 | 0.90 | |
| H-C3 (mm) | 0.99 | 0.93 | |
| H-C3-Rg (mm) | 0.99 | 0.99 | |
| H-Me-Go/Me (°) | 0.99 | 0.94 | |
| H-S (mm) | 1.00 | 0.98 | |
| C2 - H FH perp (mm) | 0.97 | 0.97 | |
| C2 - H || FH (mm) | 1.00 | 0.95 | |
| C3 - H FH perp (mm) | 0.96 | 0.96 | |
| C3 - H || FH (mm) | 1.00 | 0.94 | |
| C4 - H FH perp (mm) | 0.92 | 0.80 | |
| C4 - H || FH (mm) | 0.99 | 0.88 | |
| Airway | Nasopharynx airway at A point level (mm) | 0.93 | 0.60 |
| Oral pharyngeal airway space at Mx1 level (mm) | 0.99 | 0.11 | |
| Hypopharynx airway space at B point level (mm) | 0.99 | 0.03 | |
| Deep pharynx airway at Pog level (mm) | 0.99 | 0.10 | |
| Palate | AGSP-PNS (palate length) (mm) | 0.97 | 0.34 |
| ANS/PNS^Me/Go (angle of palate to MP) (°) | 0.95 | 0.84 | |
| SPS-SPI (max soft palate thickness) (mm) | 0.94 | 0.57 | |
| Arnett/Mc modified for OSA | Upper incisor inclination (Mx1-MxOP) (°) | 0.86 | 0.49 |
| Upper incisor tip projection (Mx1-Sn) (mm) | 0.95 | 0.86 | |
| Lower incisor inclination (Md1-MdOP) (°) | 0.94 | 0.76 | |
| Lower incisor tip projection (Md1-Sn) (mm) | 0.96 | 0.85 | |
| Overjet (mm) | 0.91 | 0.56 | |
| Overbite (mm) | 0.79 | 0.04 | |
| Maxillary anterior height (mm) | 0.89 | 0.65 | |
| Sub-Gl (mm) | −0.07 | −0.22 | |
| STA-TVL (A') (mm) | 0.87 | 0.21 | |
| STB-TVL (B') (mm) | 0.95 | 0.80 | |
| STP-TVL (mm) | 0.96 | 0.84 | |
| STP-THR (mm) | 0.85 | 0.21 |