2.3. Statistical analysis
Descriptive statistics were reported for each defined landmark. A paired t-test was performed to compare the dimensions of the right and left IAC. An unpaired t-test was performed to compare the dimensions of the IAC of males and females. Tests were performed with a 95% confidence interval. The significance level was set at p ≤ 0.05. Repeatability was assessed through intra- and inter-observer agreement with inter-class correlation (ICC).