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EC number: 200-814-8
CAS number: 74-84-0
Table 1 Total quantity of LPG used to
fill lighters each day*
*For 21 respondents, the number of lighters
reported as being filled (presuming 3 mL/lighter) yielded a median value
of 50 ml. Wasted (non-filled) LPG could not be measured (see Methods).
Table 2 Baseline characteristics for 192
study participants* by LPG exposure status
* All participants were male
** Based on the Mann-Whitney U test for age
and height and the v2 test for smoking status.
Table 3 Prevalence of respiratory tract
and dermal symptoms by LPG exposure status*
All exposed (n=113)
Table 4 Comparison of lung function
between the controls and the exposed and for the exposed within the LPG
* Comparisons made using the Mann-Whitney
LPG¼liquefied petroleum gas; FVC¼forced
vital capacity; %P¼per cent predicted; FEV1¼forced expiratory volume in
1 second; FEF25–75¼forced expiratory flow
25–75% of FVC.
Table 5 Effect ( β) of LPG exposure on
lung function in exposed participants (n=113)*
*LPG effct expressed per mL exposure
**All models of raw lung function were
adjusted for height, age and smoking; models of % predicted adjusted for
smoking only.LPG¼liquefied petroleum gas; SE¼standard error;
CI¼confidence interval; FVC¼forced vital capacity; FEV1¼forced
expiratory volume in 1 second; FEF25–75¼
forced expiratory flow of 25–75% of FVC.
In order to evaluate the effects of LPG exposure on the respiratory
system, 113 LPG exposed workers and 79 non-exposed controls were
assessed for respiratory symptoms and lung function. The results showed
LPG-exposed workers showed more prevalent respiratory symptoms and a
decline in lung function. Prevalence of wheezing or whistling in chest,
phlegm, persistent cough, difficulty breathing, chest tightness and
rhinitis or nasal irritation were all significantly higher in the
exposed workers. However, there was no statistical difference in the
prevalence of respiratory symptoms between more and less LPG-exposed
workers. Additionally, the forced expiratory volume in 1 second (FEV1)
measures were statistically lower in exposed worker compared to controls.
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