Table 3 Distribution properties of acquisition parameters.

From: A comprehensive model for characterizing Chinese female facial skin laxity by expert assessment, consumer perception, and noninvasive skin physiological parameters

Parameters*

Mean ± SD

W-value

p-value

H (C.U.)

33.323 ± 6.547

0.972

0.154

TEWL (g/(h·m2))

12.389 ± 3.569

0.883

0.000

SG (dimensionless)

4.844 ± 0.611

0.978

0.317

CC2 (dimensionless)

130.693 ± 20.817

0.587

0.000

AGEs (AU)

2.393 ± 0.625

0.967

0.082

DT (μm)

1575.047 ± 214.109

0.986

0.664

DD (dimensionless)

13.230% ± 2.116%

0.982

0.466

F3 (dimensionless)

5.006 ± 0.863

0.969

0.104

F4 (dimensionless)

11.965 ± 1.658

0.991

0.937

Q1 (dimensionless)

0.499 ± 0.462

0.98

0.387

R2 (dimensionless)

0.542 ± 0.046

0.978

0.325

R5 (dimensionless)

0.564 ± 0.054

0.965

0.066

UEW_P (mm)

72.200 ± 40.840

0.949

0.010

UEW_V (mm3)

0.339 ± 0.387

0.686

0.000

UEW_D (mm)

− 0.033 ± 0.015

0.616

0.000

ML_A (mm2)

8.354 ± 4.337

0.951

0.013

ML_V (mm3)

0.530 ± 0.471

0.839

0.000

ML_D (mm)

− 0.037 ± 0.018

0.608

0.000

NF_A (mm2)

6.962 ± 4.752

0.833

0.000

NF_V (mm3)

0.406 ± 0.401

0.742

0.000

NF_D (mm)

− 0.036 ± 0.012

0.833

0.000

DEJ (dimensionless)

3.191 ± 0.859

0.975

0.219

ET (μm)

42.704 ± 6.502

0.952

0.014

AA (years)

48.469 ± 7.464

0.921

0.001

  1. H hydration, TEWL transepidermal water los, SG skin glossiness, CC2 relative concentration of collagen in the skin at a depth of 2 mm, AGEs advanced glycation end product, DT dermis thickness, DD dermis density in %, F3 area within the enveloped curve, represents the skin fatigue, F4 area beneath the enveloped curve, represents the firmness of the skin and the resistance to the suction, Q1 total recovery area, increases with higher elastic recovery48, R2 visco-elasticity, resistance to the mechanical force versus ability of recovery, R5 net elasticity, the ratio of the elastic part of the suction phase to the immediate recovery during the relaxation phase, UEW_P perimeter of underneath eye wrinkles, UEW_V volume of underneath eye wrinkles, UEW_D depth of underneath eye wrinkles, ML_A area of marionette lines, ML_V volume of marionette lines, ML_D depth of marionette lines, NF_A area of nasolabial fold, NF_V volume of nasolabial fold, NF_D depth of nasolabial fold, DEJ dermal-epidermal junction, ratio of the area of the dermal-epidermal interface to the area of the horizontal plane, ET epidermal thickness, AA apparent age.
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