Table 2 Results of stepwise multiple regression analysis: Skin health parameters that significantly predict proportions of various bacterial communities and microbial diversity indicators.

From: Sebum and Hydration Levels in Specific Regions of Human Face Significantly Predict the Nature and Diversity of Facial Skin Microbiome

Phylum/Diversity Indicator

Genus

Cheek Sebum (μg/cm2)

Forehead Hydration [Age adjusted] (a.u.)

Regression Coefficient (% of Total Variance explained)

Std.Error

p-value

Regression Coefficient (% of Total Variance explained)

Std.Error

p-value

Actinobacteria

All genera within phylum

0.657 (24.12)

0.17

0.001

−1.307 (15.09)

0.503

0.015

Propionibacterium

0.735 (20.35)

0.213

0.002

−1.459 (13.62)

0.63

0.029

Proteobacteria

All genera within phylum

−0.193 (16.71)

0.083

0.028

*

  

Haemophilus

−0.029 (13.97)

0.009

0.004

0.077 (20.72)

0.027

0.008

Enhydrobacter

−0.005 (17.79)

0.002

0.023

*

  

Firmicutes

All genera within phylum

−0.34 (22.61)

0.091

0.001

0.665 (14.6)

0.271

0.021

Granulicatella1

−0.012 (15.24)

0.004

0.002

*

  

Streptococcus

−0.127 (18.30)

0.039

0.003

0.265 (13.93)

0.115

0.029

Veillonella

−0.006 (16.83)

0.003

0.027

*

  

Bacillus

−0.007 (21.00)

0.002

0.012

*

  

Bacteroidetes

All genera within phylum

−0.047 (19.79)

0.014

0.003

0.09 (12.27)

0.042

0.04

Prevotella

−0.01 (19.44)

0.004

0.017

*

  

DIVERSITY INDICATORS2

Shannon Index (6.83 ± 0.37)

−0.037 (14.12)

0.016

0.032

0.139 (14.14)

0.048

0.007

Chao Index (6927.05 ± 443.48)

−63.407 (16.86)

17.778

0.001

161.413 (22.09)

52.621

0.005

Total No. of Genera (350.79 ± 25.34)

−4.493 (37.03)

0.95

0.000069

6.075 (9.58)

2.812

0.04

  1. *Variable not significant.
  2. 1Cheek Hydration is a significant (p = 0.014) predictor with regression coefficient 0.021 ± 0.008 (17.85).
  3. 2Figures in parentheses are values of mean ± s.e.