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Table 3 Spearman rank correlation matrix of personal and stationary site endotoxin in relation to indoor-outdoor home and ambient endotoxin and air pollutions

From: Personal endotoxin exposure in a panel study of school children with asthma

  

Riverside

 

Whittier

 

Personal Endotoxin

Indoor Endotoxin

Outdoor Endotoxin

Ambient Endotoxin

Personal Endotoxin

Indoor Endotoxin

Outdoor Endotoxin

Ambient Endotoxin

Indoor Endotoxin

0.10

1.00

0.46*

0.41*

-0.14

1.00

0.55**

0.52**

Outdoor Endotoxin

0.21

0.46*

1.00

0.83**

-0.19

0.55**

1.00

0.73**

Ambient Endotoxin

0.32**

0.41*

0.83**

1.00

-0.02

0.52**

0.73**

1.00

Personal exposures

        

   PM2.5

-0.24*

0.49*

-0.61**

-0.57**

-0.16**

0.16

0.24*

0.03

   EC

0.15

-0.22

0.23

0.31

0.40**

-0.13

-0.08

-0.22*

   OC

0.27**

-0.19

0.12

0.05

0.41**

0.03

0.05

0.004

   NO2

0.13

0.57

-0.07

-0.12

-0.05

0.15

0.21*

0.02

   Temperature

0.22*

-0.40

-0.22

-0.27

-0.41**

0.15

0.42**

0.40**

   Relative Humidity

-0.04

0.48

-0.22

-0.17

0.09

-0.04

-0.34**

-0.46**

Indoor exposures

        

   PM2.5

-0.14

0.66**

-0.13

-0.19

-0.16

0.27**

0.32**

0.04

   EC

-0.18

0.73**

0.02

0.02

-0.10

0.19

0.36**

0.09

   OC

-0.20

0.39*

-0.25

-0.36*

0.11

0.30**

0.28**

0.01

   Temperature

-0.34

0.11

0.19

0.05

-0.33**

0.04

0.27**

0.29*

   Relative Humidity

0.35

0.41*

-0.21

-0.10

0.023

0.11

-0.23*

-0.37*

Outdoor exposures

        

   PM2.5

-0.13

0.80**

-0.03

0.13

-0.26*

-0.12

0.23*

0.05

   EC

-0.04

0.24

0.35*

0.52**

-0.02

0.02

0.33**

0.19

   OC

-0.37

0.21

0.09

0.23

-0.07

0.02

0.33**

0.14

Ambient exposures

        

   PM2.5

-0.26*

0.70**

-0.15

-0.03

-0.24**

-0.14

0.10

0.03

   EC

-0.16

0.03

0.28

0.13

-0.0003

-0.10

0.37**

0.32**

   OC

-0.29**

0.14

-0.04

-0.08

-0.15*

-0.07

0.34**

0.31**

   NO2

-0.25*

-0.01

0.06

0.02

0.04

0.04

0.32**

0.20

   Temperature

0.02

-0.64**

0.19

0.18

-0.43**

0.17

0.35**

0.36**

   Relative Humidity

0.07

0.54**

0.01

0.12

0.02

-0.12

-0.33**

-0.27**

  1. EC: elemental carbon; OC: organic carbon. * p < 0.05; ** p < 0.01.