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Respiratory symptoms in children living near busy roads and their relationship to vehicular traffic: results of an Italian multicenter study (SIDRIA 2).
Environ Health. 2009 Jun 18; 8:27.EH

Abstract

BACKGROUND

Epidemiological studies have provided evidence that exposure to vehicular traffic increases the prevalence of respiratory symptoms and may exacerbate pre-existing asthma in children. Self-reported exposure to road traffic has been questioned as a reliable measurement of exposure to air pollutants. The aim of this study was to investigate whether there were specific effects of cars and trucks traffic on current asthma symptoms (i.e. wheezing) and cough or phlegm, and to examine the validity of self-reported traffic exposure.

METHODS

The survey was conducted in 2002 in 12 centers in Northern, Center and Southern Italy, different in size, climate, latitude and level of urbanization. Standardized questionnaires filled in by parents were used to collect information on health outcomes and exposure to traffic among 33,632 6-7 and 13-14 years old children and adolescents. Three questions on traffic exposure were asked: the traffic in the zone of residence, the frequency of truck and of car traffic in the street of residence. The presence of a possible response bias for the self-reported traffic was evaluated using external validation (comparison with measurements of traffic flow in the city of Turin) and internal validations (matching by census block, in the cities of Turin, Milan and Rome).

RESULTS

Overall traffic density was weakly associated with asthma symptoms but there was a stronger association with cough or phlegm (high traffic density OR = 1.24; 95% CI: 1.04, 1.49). Car and truck traffic were independently associated with cough or phlegm. The results of the external validation did not support the existence of a reporting bias for the observed associations, for all the self-reported traffic indicators examined. The internal validations showed that the observed association between traffic density in the zone of residence and respiratory symptoms did not appear to be explained by an over reporting of traffic by parents of symptomatic subjects.

CONCLUSION

Children living in zones with intense traffic are at higher risk for respiratory effects. Since population characteristics are specific, the results of validation of studies on self-reported traffic exposure can not be generalized.

Authors+Show Affiliations

Cancer Epidemiology Unit, AOU San Giovanni Battista Hospital-Center for Cancer Prevention (CPO Piedmont) and University of Turin, Via Santena 7, 10126 Turin, Italy. enrica.migliore@cpo.itNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Multicenter Study
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19534827

Citation

Migliore, Enrica, et al. "Respiratory Symptoms in Children Living Near Busy Roads and Their Relationship to Vehicular Traffic: Results of an Italian Multicenter Study (SIDRIA 2)." Environmental Health : a Global Access Science Source, vol. 8, 2009, p. 27.
Migliore E, Berti G, Galassi C, et al. Respiratory symptoms in children living near busy roads and their relationship to vehicular traffic: results of an Italian multicenter study (SIDRIA 2). Environ Health. 2009;8:27.
Migliore, E., Berti, G., Galassi, C., Pearce, N., Forastiere, F., Calabrese, R., Armenio, L., Biggeri, A., Bisanti, L., Bugiani, M., Cadum, E., Chellini, E., Dell'orco, V., Giannella, G., Sestini, P., Corbo, G., Pistelli, R., Viegi, G., & Ciccone, G. (2009). Respiratory symptoms in children living near busy roads and their relationship to vehicular traffic: results of an Italian multicenter study (SIDRIA 2). Environmental Health : a Global Access Science Source, 8, 27. https://doi.org/10.1186/1476-069X-8-27
Migliore E, et al. Respiratory Symptoms in Children Living Near Busy Roads and Their Relationship to Vehicular Traffic: Results of an Italian Multicenter Study (SIDRIA 2). Environ Health. 2009 Jun 18;8:27. PubMed PMID: 19534827.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Respiratory symptoms in children living near busy roads and their relationship to vehicular traffic: results of an Italian multicenter study (SIDRIA 2). AU - Migliore,Enrica, AU - Berti,Giovanna, AU - Galassi,Claudia, AU - Pearce,Neil, AU - Forastiere,Francesco, AU - Calabrese,Roberto, AU - Armenio,Lucio, AU - Biggeri,Annibale, AU - Bisanti,Luigi, AU - Bugiani,Massimiliano, AU - Cadum,Ennio, AU - Chellini,Elisabetta, AU - Dell'orco,Valerio, AU - Giannella,Gabriele, AU - Sestini,Piersante, AU - Corbo,Giuseppe, AU - Pistelli,Riccardo, AU - Viegi,Giovanni, AU - Ciccone,Giovannino, AU - ,, Y1 - 2009/06/18/ PY - 2008/04/09/received PY - 2009/06/18/accepted PY - 2009/6/19/entrez PY - 2009/6/19/pubmed PY - 2009/8/15/medline SP - 27 EP - 27 JF - Environmental health : a global access science source JO - Environ Health VL - 8 N2 - BACKGROUND: Epidemiological studies have provided evidence that exposure to vehicular traffic increases the prevalence of respiratory symptoms and may exacerbate pre-existing asthma in children. Self-reported exposure to road traffic has been questioned as a reliable measurement of exposure to air pollutants. The aim of this study was to investigate whether there were specific effects of cars and trucks traffic on current asthma symptoms (i.e. wheezing) and cough or phlegm, and to examine the validity of self-reported traffic exposure. METHODS: The survey was conducted in 2002 in 12 centers in Northern, Center and Southern Italy, different in size, climate, latitude and level of urbanization. Standardized questionnaires filled in by parents were used to collect information on health outcomes and exposure to traffic among 33,632 6-7 and 13-14 years old children and adolescents. Three questions on traffic exposure were asked: the traffic in the zone of residence, the frequency of truck and of car traffic in the street of residence. The presence of a possible response bias for the self-reported traffic was evaluated using external validation (comparison with measurements of traffic flow in the city of Turin) and internal validations (matching by census block, in the cities of Turin, Milan and Rome). RESULTS: Overall traffic density was weakly associated with asthma symptoms but there was a stronger association with cough or phlegm (high traffic density OR = 1.24; 95% CI: 1.04, 1.49). Car and truck traffic were independently associated with cough or phlegm. The results of the external validation did not support the existence of a reporting bias for the observed associations, for all the self-reported traffic indicators examined. The internal validations showed that the observed association between traffic density in the zone of residence and respiratory symptoms did not appear to be explained by an over reporting of traffic by parents of symptomatic subjects. CONCLUSION: Children living in zones with intense traffic are at higher risk for respiratory effects. Since population characteristics are specific, the results of validation of studies on self-reported traffic exposure can not be generalized. SN - 1476-069X UR - https://www.unboundmedicine.com/medline/citation/19534827/Respiratory_symptoms_in_children_living_near_busy_roads_and_their_relationship_to_vehicular_traffic:_results_of_an_Italian_multicenter_study__SIDRIA_2__ L2 - https://ehjournal.biomedcentral.com/articles/10.1186/1476-069X-8-27 DB - PRIME DP - Unbound Medicine ER -