Air pollution is associated with primary health care visits for asthma in Sweden: a case-crossover design with a distributed lag non-linear model

Taj, TahirLund University,Lunds universitet,Institutionen för laboratoriemedicin,Medicinska fakulteten,Arbetsorganisation och hälsa,Forskargrupper vid Lunds universitet,Department of Laboratory Medicine,Faculty of Medicine,Environmental health and occupational health,Lund University Research Groups (författare)

Air pollution is associated with primary health care visits for asthma in Sweden : a case-crossover design with a distributed lag non-linear model

BACKGROUND: Air pollution can increase the symptoms of asthma and has an acute effect on the number of emergency room visits and hospital admissions because of asthma, but little is known about the effect of air pollution on the number of primary health care (PHC) visits for asthma.OBJECTIVE: To investigate the association between air pollution and the number of PHC visits for asthma in Scania, southern Sweden.METHODS: Data on daily PHC visits for asthma were obtained from a regional healthcare database in Scania, which covers approximately half a million people. Air pollution data from 2005 to 2010 were obtained from six urban background stations. We used a case-crossover study design and a distributed lag non-linear model in the analysis.RESULTS: The air pollution levels were generally within the EU air quality guidelines. The mean number of daily PHC visits for asthma was 34. The number of PHC visits increased by 5% (95% confidence interval (CI): 3.91-6.25%) with every 10µg m(-3) increase in daily mean NO2 lag (0-15), suggesting that daily air pollution levels are associated with PHC visits for asthma.CONCLUSION: Even though the air quality in Scania between 2005 and 2010 was within EU's guidelines, the number of PHC visits for asthma increased with increasing levels of air pollution. This suggests that as well as increasing hospital and emergency room visits, air pollution increases the burden on PHC due to milder symptoms of asthma

Jakobsson, KristinaLund University,Lunds universitet,Institutionen för laboratoriemedicin,Medicinska fakulteten,Arbetsorganisation och hälsa,Forskargrupper vid Lunds universitet,Department of Laboratory Medicine,Faculty of Medicine,Environmental health and occupational health,Lund University Research Groups(Swepub:lu)ymed-kja (författare)
Stroh, EmilieUmeå University,Lund University,Lunds universitet,Umeå universitet,Yrkes- och miljömedicin,Laboratory Medicine, Occupational and Environmental Medicine, Lund University, Lund, Sweden,Avdelningen för arbets- och miljömedicin,Institutionen för laboratoriemedicin,Medicinska fakulteten,Arbetsorganisation och hälsa,Forskargrupper vid Lunds universitet,Division of Occupational and Environmental Medicine, Lund University,Department of Laboratory Medicine,Faculty of Medicine,Environmental health and occupational health,Lund University Research Groups(Swepub:lu)nate-est (författare)
Oudin, AnnaUmeå University,Umeå universitet,Yrkes- och miljömedicin(Swepub:lu)med-aao (författare)
Institutionen för laboratoriemedicinMedicinska fakulteten (creator_code:org_t)

Ingår i:Spatial and Spatio-temporal Epidemiology: Elsevier BV17, s. 37-441877-58451877-5853

Av författaren/redakt...: Taj, Tahir; Jakobsson, Krist ...; Stroh, Emilie; Oudin, Anna

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