Table 2. Validity and reliability of measurements made on intraoral photographs of the dental arches compared to those made on plaster models (examiner B).
ICC: intraclass correlation coefficient; SD: standard deviation; TSALD: tooth size-arch length discrepancy; LII: Little's Irregularity Index; BBL: basal bone length; STS: sum of teeth sizes.
| Variable | ICC | Mean difference | SD | P-value | 95% confidence interval | |
| STS | 0.99 | 0.10 | 0.59 | 0.852 | −0.15 | 0.18 |
| BBL | 0.99 | 0.12 | 0.32 | 0.385 | −0.05 | 0.13 |
| TSALD value | 0.95 | −0.16 | 0.65 | 0.792 | −0.20 | 0.15 |
| LII | 0.99 | −0.12 | 0.26 | 0.127 | −0.13 | 0.16 |
| Partial Bolton | 0.92 | −0.27 | 1.13 | 0.236 | −0.74 | 0.19 |
| Overall Bolton | 0.94 | −0.24 | 0.79 | 0.576 | −0.42 | 0.24 |