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Vol. 2 - 44.1-44.30 (Printed Version) - Tabl* 44.9
Indoor Air Quality
TOBACCO SMOKE
Urinary cotinine in non-smokers according to the number of reported hours of exposure
to other people’s tobacco smoke within the previous seven days
|
Duration of exposure |
|||
|
Quintile |
Limits (hrs) |
Number |
Urinary cotinine (mean ± SD)(ng/ml)a |
|
1st |
0.0-1.5 |
43 |
2.8 ±3.0 |
|
2nd |
1.5-4.5 |
47 |
3.4 ±2.7 |
|
3rd |
4.5-8.6 |
43 |
5.3 ±4.3 |
|
4th |
8.6-20.0 |
43 |
14.7 ±19.5 |
|
5th |
20.0-80.0 |
45 |
29.6 ±73.7 |
|
All |
0.0-80.0 |
221 |
11.2 ±35.6 |
a
Trend with increasing exposure was significant (p<0.001).Source: Based on Wald et al. 1984.
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