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Table 2 Mean CO exposure concentrations [IQR] during each sampling period, n = 419 total sampling periods

From: Personal carbon monoxide exposure, respiratory symptoms, and the potentially modifying roles of sex and HIV infection in rural Uganda: a cohort study

Characteristic

1-h TWA

P value*

8-h TWA

P value*

Sex

0.0495

 

0.04

 Male (n = 220)

7.2 [2.9, 16.3]

 

2.1 [0.7, 4.4]

 

 Female (n = 199)

9.9 [4.4, 20.8]

 

2.7 [1.2, 5.6]

 

Season

0.32

 

0.41

 Dry (n = 184)

7.8 [3.2, 14.5]

 

2.2 [1.0, 4.3]

 

 Rainy (n = 235)

8.6 [3.8, 19.8]

 

2.4 [1.0, 5.5]

 

Biomass

< 0.0001

 

< 0.0001

 Charcoal (n = 60)

32.9 [9.0, 94.8]

 

9.2 [2.5, 28.9]

 

 Firewood (n = 354)

7.1 [3.1, 14.8]

 

2.1 [0.8, 4.2]

 

Home location

0.0004

 

< 0.0001

 Urban (n = 69)

12.7 [5.5, 41.3]

 

4.4 [2.2, 11.6]

 

 Rural (n = 350)

7.5 [3.2, 16.6]

 

2.1 [0.8, 4.3]

 

HIV serostatus

0.0003

 

< 0.0001

 HIV infected (n = 201)

10.4 [4.1, 27.3]

 

3.0 [1.4, 7.7]

 

 HIV uninfected (n = 218)

6.9 [3.1, 13.9]

 

1.9 [0.7, 3.7]

 
  1. CO Carbon monoxide, IQR Interquartile range, TWA Time-weighted average, HIV Human immunodeficiency virus
  2. *Wilcoxon rank sum tests
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Environmental Health

ISSN: 1476-069X