Table 1 SC thickness, viable epidermis thickness and DEJ undulation determined for the temple, cheekbone and mandible.

From: Line-field confocal optical coherence tomography coupled with artificial intelligence algorithms to identify quantitative biomarkers of facial skin ageing

Parameters

[20,30]

[31,40]

[41,50]

[51,60]

[61,70]

Test

Temple

 SC thickness (µm)

Mean (sd)

13.2 (0.8)

13.4 (0.8)

13.4 (1.2)

13.6 (0.9)

14.2 (1.0)

p = 0.0039 (Kruskal Wallis)

Mult. comp

a

ab

ab

ab

b

 

 Viable epidermis thickness (µm)

Mean (sd)

54.6 (6.8)

53.3 (4.6)

51.4 (3.9)

53.0 (4.9)

52.1 (4.8)

p = 0.42 (Kruskal Wallis)

Mult. comp

 

 Undulation DEJ

Mean (sd)

2.64 (2.04)

2.31 (1.76)

2.12 (1.88)

2.42 (1.96)

2.07 (1.26)

p = 0.92 (Kruskal Wallis)

Mult. comp

 

Cheekbone

 SC thickness (µm)

Mean (sd)

12.1 (0.5)

12.4 (0.5)

12.5 (0.9)

12.3 (0.6)

12.5 (0.8)

p = 0.31 (Kruskal Wallis)

Multi. Comp

 

 Viable epidermis thickness (µm)

Mean (sd)

48.4 (6.5)

49.0 (6.6)

44.7 (7.8)

46.8 (6.1)

45.7 (7.4)

p = 0.26 (Kruskal Wallis)

Mult. comp

 

 Undulation DEJ

Mean (sd)

0.26 (0.39)

0.46 (0.56)

0.37(0.42)

0.475 (0.457)

0.48 (0.48)

p = 0.13 (Kruskal Wallis)

Mult. Comp

 

Mandible

 SC thickness(µm)

Mean (sd)

13.1 (0.4)

13.3 (1.0)

13.4 (0.8)

13.6 (0.8)

13.9 (1.3)

p = 0.04 (Kruskal Wallis)

Mult. comp

a

ab

ab

ab

b

 

 Viable epidermis thickness (µm)

Mean (sd)

55.1 (7.2)

57.5 (8.2)

51.0 (4.6)

50.5 (6.4)

48.1 (5.3)

p = 0.0003 (Kruskal Wallis)

Mult. comp

bc

c

ab

ab

a

 

 Undulation DEJ

Mean (sd)

1.44 (1.66)

1.19 (1.13)

1.42 (1.52)

1.44 (1.04)

1.08 (0.84)

p = 0.92 (Kruskal Wallis)

Mult. Comp