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Table 2 Bivariate association of indoor pollutant concentrations* and respiratory health

From: Indoor pollutant exposure is associated with heightened respiratory symptoms in atopic compared to non-atopic individuals with COPD

Bivariate analysis

Non-atopic participants (n = 54)

Atopic participants (n = 23)

 

β

p

95% CI

β

p

95% CI

MMRC (dyspnea)

0.11

0.31

[−0.11,0.33]

0.21

0.01

[0.06,0.37]

Rescue medication use

0.06

0.49

[−0.11,0.24]

0.18

0.03

[0.02,0.34]

BCSS

−0.28

0.13

[−0.65,0.09]

0.32

0.09

[−0.05,0.69]

SGRQ

1.04

0.47

[−1.77,3.85]

2.15

0.05

[0.03,4.27]

 

OR

p

95% CI

OR

p

95% CI

Wheeze

1.38

0.14

[0.90,2.11]

2.25

0.01

[1.22,4.14]

Nocturnal symptoms

1.00

0.98

[0.55,1.80]

1.76

0.04

[1.02,3.01]

Cough

0.76

0.27

[0.46,1.24]

1.11

0.50

[0.82,1.51]

Phlegm

1.09

0.67

[0.72,1.66]

1.15

0.37

[0.84,1.57]

Severe exacerbations

0.89

0.81

(0.35, 2.28)

1.27

0.21

(0.87, 1.83)

  1. BCSS = Breathlessness, Cough, and Sputum Scale.
  2. SGRQ = St. George’s Respiratory Questionnaire.
  3. MMRC = Modified Medical Research Council.
  4. *ORs and coefficients represent difference in stated outcomes for every 10 point change in PM2.5.
  5. Bold values represent statistically significant associations (p <0.05).