Research Article
Characterizing Facial Skin Ageing in Humans: Disentangling Extrinsic from Intrinsic Biological Phenomena
Table 1
Sample characteristics and clinical assessment scores.
| | | Young group
() | Midaged group
() | Old group
() | Total
() | ANOVA
value |
| | Age in years, | | | | | | | Mean (SD) | 33.5 (2.1) | 55.4 (2.7) | 76.6 (1.9) | 55.2 (18.1) | n.a. | | Range | 31 to 37 | 51 to 59 | 74 to 79 | 31 to 79 | | | BMI in kg/m2, | | | | | | | Mean (SD) | 21.8 (2.0) | 26.0 (5.0) | 26.2 (2.5) | 24.7 (3.9) | n.a. | | Range | 19.7 to 25.9 | 20.8 to 30.5 | 21.1 to 29.3 | 19.7 to 30.5 | | | Photo type, | | | | | n.a. | | II | 4 | 7 | 4 | 14 | n.a. | | III | 4 | 1 | 4 | 10 | n.a. | | Postmenopausal, | 0 | 6 | 8 | 14 | n.a. | | Lifetime sun exposure in hours, mean (SD) | 48522 (17039) | 62141 (11934) | 90953 (47621) | 67205 (33888) | n.a. | | Skin ageing score, mean (SD) | 19.6 (1.6) | 25.7 (3.8) | 32.5 (3.9) | — | <0.001 | | Wrinkle score, mean (SD) | 26.8 (7.9) | 56.4 (12.3) | 83.3 (14.6) | — | <0.001 | | Sagging score, | | | | | | | Mean (SD) | 1.3 (0.4) | 2.4 (0.4) | 3.6 (0.6) | — | <0.001 | | Median | 1.5 | 2.5 | 4.0 | | |
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SD: standard deviation; BMI: Body Mass Index; n.a.: not applied.
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