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Table 3 Differences in clinical skin aging parameters after 12 weeks of study supplementation as assessed by dermatologist raters

From: Differential effects of dietary supplements on metabolomic profile of smokers versus non-smokers

Clinical skin aging

Parameter

Overall (N = 28)

Non-smokers (N = 17)

Smokers (N = 11)

 

Mean

SD

P

Mean

SD

P

Mean

SD

P

Fine wrinkling

-0.571

2.516

0.24

+0.235

1.821

0.60

-1.769

2.743

0.04

Deep wrinkling

+0.033

3.054

0.95

-1.853

1.579

0.00

+2.500

2.754

0.01

Surface evenness

+0.429

1.874

0.24

+0.882

1.996

0.09

+0.154

1.819

0.77

Elasticity

+0.161

2.415

0.73

+1.353

1.730

0.01

-1.115

2.468

0.13

Glow

+1.179

3.151

0.06

+0.235

3.073

0.76

+2.538

2.570

0.00

Hydration

-0.786

2.234

0.07

+0.294

0.985

0.24

-1.846

2.824

0.04

  1. Smokers showed decreased fine wrinkles and increased glow, but decreased hydration. Non-smokers showed decreased deep wrinkling and increased elasticity. Values are the average of scores given by the four raters. Negative values indicate decrease, positive values indicate increase. P-values calculated using two-sided t-tests. SD, standard deviation.