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Table 3 Concentration–response effect modification by environmental perception

From: Concentration-dependent increase in symptoms due to diesel exhaust in a controlled human exposure study

Symptom category (at 4 h)

Perception measure

β (SE)

P value

Total

Lighting

− 0.02 (0.03)

0.44

 

Glare

− 0.01 (0.01)

0.29

 

Noise

− 0.07 (0.03)

0.01

 

Temperature

−  0.06 (0.03)

0.02

 

Humidity

− 0.03 (0.05)

0.50

 

Air circulation

0.03 (0.03)

0.30

 

Air quality

− 0.03 (0.04)

0.52

 

Odor

0.03 (0.03)

0.23

 

Ventilation

0.00 (0.01)

0.72

 

Anxiety

0.02 (0.02)

0.38

Constitutional

Lighting

− 0.01 (0.01)

0.08

 

Glare

0.00 (0.00)

0.50

 

Noise

− 0.01 (0.01)

0.06

 

Temperature

− 0.01 (0.01)

0.03

 

Humidity

0.00 (0.01)

0.96

 

Air circulation

0.01 (0.01)

0.32

 

Air quality

0.01 (0.01)

0.34

 

Odor

0.01 (0.01)

0.09

 

Ventilation

0.00 (0.00)

0.55

 

Anxiety

0.01 (0.00)

0.03

Eyes

Lighting

0.01 (0.01)

0.46

 

Glare

− 0.01 (0.00)

0.23

 

Noise

− 0.02 (0.01)

0.02

 

Temperature

− 0.03 (0.01)

0.01

 

Humidity

0.00 (0.02)

0.91

 

Air circulation

0.01 (0.01)

0.19

 

Air quality

− 0.03 (0.02)

0.13

 

Odor

0.01 (0.01)

0.27

 

Ventilation

0.00 (0.00)

0.60

 

Anxiety

0.00 (0.01)

0.94

  1. Symptom scores were summed into categories
  2. Significant effects (P < 0.05) are bolded