Seasonal variation in the acute effects of ozone on premature mortality among elderly Japanese

We conducted a multicity time-series study using monitoring data to assess seasonal patterns of short-term ozone–mortality association among elderly aged 65 years and over in Japan. Daily exposure to ambient ozone was computed using hourly measurements of photochemical oxidants available at multiple...

Full description

Saved in:
Bibliographic Details
Published in:Environmental monitoring and assessment 2013-10, Vol.185 (10), p.8767-8776
Main Authors: Ng, Chris Fook Sheng, Ueda, Kayo, Nitta, Hiroshi, Takeuchi, Ayano
Format: Article
Language:English
Subjects:
Aged
Air Pollutants - analysis
Air pollution
Air Pollution - statistics & numerical data
Animal, plant and microbial ecology
Applied ecology
Applied sciences
Atmospheric pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Biological and medical sciences
Cold season
Conservation, protection and management of environment and wildlife
Earth and Environmental Science
Ecology
Ecotoxicology
Emission measurements
Environment
Environmental Exposure - statistics & numerical data
Environmental Management
Environmental monitoring
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
Health risk assessment
Humans
Infectious diseases
Japan - epidemiology
Monitoring/Environmental Analysis
Mortality
Mortality, Premature - trends
Nitrogen dioxide
Nitrogen Dioxide - analysis
Older people
Outdoor air quality
Oxidizing agents
Ozone
Ozone - analysis
Particulate matter
Particulate Matter - analysis
Photochemicals
Pollution
Premature mortality
Respiratory diseases
Seasonal variations
Seasons
Studies
Time series
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We conducted a multicity time-series study using monitoring data to assess seasonal patterns of short-term ozone–mortality association among elderly aged 65 years and over in Japan. Daily exposure to ambient ozone was computed using hourly measurements of photochemical oxidants available at multiple monitoring stations in each city. Effects of ozone on daily all-cause non-accidental, cardiovascular, and respiratory mortality were estimated using distributed lag linear models, controlling for confounding by temporal, day of the week, temperature, and flu epidemics. City-level effect estimates were combined using inverse variance meta-analysis. In spring and autumn, a 10-ppbv increase of daily maximum 8-h average ozone concentration in the previous 3 days was associated with 0.69 % (95 % confidence interval (CI): 0.27–1.10), 1.07 % (0.34–1.82), and 1.77 % (0.78–2.77) increases in daily all-cause, cardiovascular, and respiratory mortality, respectively. Forward displacement of respiratory mortality was large during the cold season despite lower ozone concentration. Results were generally independent of fine particulate matter and nitrogen dioxide. Findings suggest significant mortality effects of short-term ozone exposure among the elderly during the moderate season. Those with underlying respiratory diseases were susceptible, even during winter.
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-013-3211-6