Repeated measures of skin to perichondrium distance at three sites, expressed in mm, and the mean difference (second − first)
| First | Second | Mean difference (95% CI) | |
|---|---|---|---|
| External | 4.11 | 4.11 | − 0.005 (−0.811 to 0.801) |
| Midline | 3.88 | 3.89 | − 0.015 (−0.844 to 0.841) |
| Internal | 4.04 | 4.07 | − 0.034 (−0.934 to 0.866) |