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Table 4 Regression model for square root of average PB-PAH exposures of each subject across all the sampling sessions (N = 28; R 2 = 0.65; adjusted R 2 = 0.61)

From: Modeling personal particle-bound polycyclic aromatic hydrocarbon (pb-pah) exposure in human subjects in Southern California

Variable

Beta

Standard error

p-value

Partial R2

VIF

Intercept

1.68

0.31

<.0001

 

0

Percent of in-vehicle travel time

12.19

2.35

<.0001

0.39

1.01

Percent of weekday time

1.14

0.39

0.0078

0.16

1.03

Had work-related exposure to traffic pollutants (yes/no)a

0.77

0.30

0.0163

0.10

1.03

  1. aWork-related exposure includes working around parking garage, kiosk, auto shop, buses, trucks, or heavy traffic, or driving a car/bus/truck during the work.