Table 3 Associations between airway obstruction (FEV1/FVC < 70%) and Biomass exposure*.

From: A clean fuel cookstove is associated with improved lung function: Effect modification by age and secondhand tobacco smoke exposure

 

Biomass (n = 100)

LPG (n = 100)

p value

Any Obstruction

13

4

0.04

Mild

1

0

0.49

Moderate

9

2

0.06

Severe

2

2

1.0

Very Severe

1

0

0.49

  1. *Fisher’s exact test.
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