| Year/Anatomical Part | M | s.e | 95% confidence interval | F | p | |
|---|---|---|---|---|---|---|
| Lower bound | Upper bound | |||||
| 2012 | 27.25 | 14.61 | 0.0 | 63.04 | 0.160 | 0.985 |
| 2013 | 23.25 | 18.94 | 0.0 | 69.65 | ||
| 2014 | 19.75 | 14.26 | 0.0 | 54.69 | ||
| 2015 | 30.75 | 25.91 | 0.0 | 94.23 | ||
| 2016 | 37.50 | 27.59 | 0.0 | 105.10 | ||
| 2017 | 32.50 | 22.90 | 0.0 | 88.61 | ||
| 2018 | 49.0 | 37.38 | 0.0 | 140.59 | ||
| External ear | 2.57 | 0.53 | 1.28 | 3.86 | 44.542 | 0.000 |
| Middle ear | 13.0 | 3.39 | 4.71 | 21.29 | ||
| Inner ear | 99.71 | 12.85 | 68.28 | 131.15 | ||
| the Other | 10.43 | 3.33 | 2.28 | 18.58 | ||