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. Author manuscript; available in PMC: 2009 Dec 1.
Published in final edited form as: J Occup Environ Med. 2008 Dec;50(12):1421–1429. doi: 10.1097/JOM.0b013e3181896936

Table 4.

Linear regression models relating postural balance measurements with Ln Hair Mn (n=22)

Test Dependent Variable Independent Variable Parameter Estimate Standard Error P Value (one tailed) Model R2
EO SA Intercept 1.28 0.65 0.035 0.52
Ln Hair Mn 0.21 0.12 0.05
Age −0.0047 0.01 0.31
Gender 0.16 0.19 0.21
HT/WT −0.48 0.99 0.31
Alcohol −0.31 0.14 0.02
Tobacco −0.021 0.014 0.09
SL Intercept 3.66 0.30 0.0001 0.31
Ln Hair Mn 0.10 0.061 0.05
Age −0.002 0.005 0.27
Gender 0.12 0.09 0.10
HT/WT 0.49 0.40 0.12

EC SA Intercept 2.19 0.79 0.0129 0.34
Ln Hair Mn 0.30 0.16 0.04
Age −0.006 0.012 0.30
Gender 0.21 0.25 0.21
HT/WT −2.45 1.06 0.02
SL Intercept 3.70 0.41 0.0001 0.32
Ln Hair Mn 0.16 0.085 0.04
Age 0.0004 0.006 0.47
Gender 0.21 0.13 0.06
HT/WT 0.25 0.55 0.33

FO SA Intercept 1.44 0.50 0.01 0.17
Ln Hair Mn 0.13 0.10 0.12
Age −0.002 0.008 0.39
Gender 0.19 0.16 0.13
HT/WT 0.10 0.67 0.44
SL Intercept 3.67 0.38 0.0001 0.23
Ln Hair Mn 0.04 0.08 0.33
Age 0.0007 0.0060 0.456
Gender 0.14 0.12 0.14
HT/WT 0.95 0.51 0.04

FC SA Intercept 2.17 0.83 0.009 0.11
Ln Hair Mn 0.18 0.17 0.16
Age −0.010 0.01 0.22
Gender 0.02 0.26 0.47
HT/WT 0.55 1.10 0.31
SL Intercept 4.14 0.60 0.0001 0.14
Ln Hair Mn 0.08 0.12 0.25
Age −0.003 0.009 0.38
Gender 0.11 0.19 0.28
HT/WT 1.00 0.80 0.12

Ln denotes natural logarithm transformed