Table 3.
Quantitative evaluation of age-related changes in compaction and backscattered intensity (brightness)
| Feature | Young aged group | Middle aged group | Old aged group |
|---|---|---|---|
| Compaction of epidermis (µm) ΔEP | 64.5 [±3.03] (p < 0.001)* | 43.5 [±2.02] (p < 0.001) | 33.75 [±1.43] (p < 0.001) |
| Compaction of DEJ (Degrees °) ΔDEJ | 63.8 [±1.96] | 60.2 [±2.22] | 35.75 [±1.36] (p < 0.001) |
| Compaction of papillary dermis (µm) ΔPD | 63.75 [±3.75] (p < 0.001) | 54.75 [±2.51] (p < 0.001) | 30.75 [±1.19] (p < 0.001) |
| Visibility of fibers in deeper reticular dermis (µm) V RD | 79.4 [±3.09] | 65.15 [±6.94] | 175.2 [±12.16] (p < 0.001) |
| Brightness of epidermis (AU) I EP | 140.15 [±8.13] | 154.05 [±17.12] | 447.45 [±48.08] (p < 0.001) |
| Brightness of DEJ (AU) I DEJ | 47.5 [±8.09] (p < 0.001) | 77.95 [±10.88] (p < 0.001) | 184.25 [±13.74] (p < 0.001) |
| Brightness of papillary dermis (AU) I PD | 197.2 [±14.74] (p < 0.001) | 270.05 [±20.67] (p < 0.001) | 446.1 [±28.23] (p < 0.001) |
* p values are mentioned whenever appropriate; for details see “Results”