|
|
||||||||
Original Articles |
Household gas appliances produce nitrogen dioxide (NO2), which may be associated with an increase in symptoms in asthmatics. The relationship between indoor NO2 exposure, and respiratory symptoms in people with asthma was evaluated. Self-reported asthmatics (n=125) wore lapel badges that measured NO2 daily over 6 weeks at home. Outdoor pollutants, spores and meteorological parameters were measured daily, in addition to smoking status and demographic factors. Seven asthma symptoms were recorded in diaries, for analysis by same day and also with 1 day lag exposures, using a generalized estimating equation. Significant interactions were demonstrated between NO2 at age < or =14 yrs, with respect to the symptoms of chest tightness on the same day (odds ratio (OR): 1.29, 95% confidence interval (CI): 1.16-1.43) and with a 1 day lag (OR: 1.29, 95% CI: 1.14-1.46), breathlessness on exertion with a 1 day lag (OR: 1.13, 95% CI: 1.00-1.28), daytime asthma attacks on the same day (OR: 1.13, 95% CI: 1.02-1.26) night asthma attacks on the same day (OR: 1.16, 95% CI:1.03-1.30) and with a 1 day lag (OR: 1.15, 95% CI; 1.03-1.29) after adjustment for potential confounders. A significant interaction between NO2 and age 35-49 yrs was demonstrated for coughs with a 1 day lag (OR: 1.15, 95% CI: 1.01-1.31). Daily personal exposures to NO2 are associated with asthmatic symptoms in children.
This article has been cited by other articles:
![]() |
P. Howden-Chapman, N. Pierse, S. Nicholls, J. Gillespie-Bennett, H. Viggers, M. Cunningham, R. Phipps, M. Boulic, P. Fjallstrom, S. Free, et al. Effects of improved home heating on asthma in community dwelling children: randomised controlled trial BMJ, September 23, 2008; 337(sep23_1): a1411 - a1411. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Weichenthal, A. Dufresne, and C. Infante-Rivard Review: Indoor Nitrogen Dioxide and VOC Exposures: Summary of Evidence for an Association with Childhood Asthma and a Case for the Inclusion of Indoor Ultrafine Particle Measures in Future Studies Indoor and Built Environment, October 1, 2007; 16(5): 387 - 399. [Abstract] [PDF] |
||||
![]() |
K. Belanger, J. F. Gent, E. W. Triche, M. B. Bracken, and B. P. Leaderer Association of Indoor Nitrogen Dioxide Exposure with Respiratory Symptoms in Children with Asthma Am. J. Respir. Crit. Care Med., February 1, 2006; 173(3): 297 - 303. [Abstract] [Full Text] [PDF] |
||||
![]() |
L. S Pilotto, M. Nitschke, B. J Smith, D. Pisaniello, R. E Ruffin, H. J McElroy, J. Martin, and J. E Hiller Randomized controlled trial of unflued gas heater replacement on respiratory health of asthmatic schoolchildren Int. J. Epidemiol., February 1, 2004; 33(1): 208 - 211. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. M Samet and M. L Bell Commentary: Nitrogen dioxide and asthma redux Int. J. Epidemiol., February 1, 2004; 33(1): 215 - 216. [Full Text] [PDF] |
||||
![]() |
B. J Smith and R. Ruffin Review: evidence does not support an association between allergen levels and risk for asthma Evid. Based Med., January 1, 2001; 6(1): 27 - 27. [Full Text] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |