Weather, pollution, and acute myocardial infarction in Hong Kong and Taiwan.
BACKGROUND: Several previous studies examined the association between acute myocardial infarction (AMI) incidence and temperature and/or air pollution. Results of these studies have been inconsistent and few studies have been done in cities with sub-tropical or tropical climates. METHODS: Daily data...
| Main Authors: | , , |
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| Formato: | Journal article |
| Idioma: | English |
| Publicado em: |
2013
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| _version_ | 1826288447302664192 |
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| author | Goggins, W Chan, E Yang, C |
| author_facet | Goggins, W Chan, E Yang, C |
| author_sort | Goggins, W |
| collection | OXFORD |
| description | BACKGROUND: Several previous studies examined the association between acute myocardial infarction (AMI) incidence and temperature and/or air pollution. Results of these studies have been inconsistent and few studies have been done in cities with sub-tropical or tropical climates. METHODS: Daily data on AMI hospitalizations, mean temperature and humidity, and pollutants, were collected for 2000-2009 for three warm-climate Asian cities. Poisson Generalized Additive Models were used to regress daily AMI counts on temperature, humidity, and pollutants while controlling for day of the week, long-term trends and seasonal effects. Smoothing splines allowing non-linear associations were used for temperature and humidity while pollutants were modeled as linear terms. RESULTS: A 1°C drop below a threshold temperature of 24°C was significantly (p<.0001) associated with AMI hospitalization increases of 3.7% (average lag 0-13 temperature) in Hong Kong, 2.6% (average lag 0-15) in Taipei, and 4.0% (average lag 0-11) in Kaohsiung. No significant heat effects were observed. Among pollutants same day nitrogen dioxide (NO2) levels were the strongest predictors in all three cities, with a 10mg/m(3) increase in NO2 being associated with a 1.1% rise in AMI hospitalization in Hong Kong, and a 10 ppb rise being associated with 4.4% and 2.6% rises in Taipei and Kaohsiung, respectively. CONCLUSIONS: Cool temperatures and higher NO2 levels substantially raised AMI risk in these warm-climate cities and the effect sizes we observed were stronger than those found in previous studies. More attention should be paid to the health dangers of cold weather in warm-climate cities. |
| first_indexed | 2024-03-07T02:13:50Z |
| format | Journal article |
| id | oxford-uuid:a18d41ec-ea9c-493b-a224-c09d53f2cac9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:13:50Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:a18d41ec-ea9c-493b-a224-c09d53f2cac92022-03-27T02:14:02ZWeather, pollution, and acute myocardial infarction in Hong Kong and Taiwan.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a18d41ec-ea9c-493b-a224-c09d53f2cac9EnglishSymplectic Elements at Oxford2013Goggins, WChan, EYang, CBACKGROUND: Several previous studies examined the association between acute myocardial infarction (AMI) incidence and temperature and/or air pollution. Results of these studies have been inconsistent and few studies have been done in cities with sub-tropical or tropical climates. METHODS: Daily data on AMI hospitalizations, mean temperature and humidity, and pollutants, were collected for 2000-2009 for three warm-climate Asian cities. Poisson Generalized Additive Models were used to regress daily AMI counts on temperature, humidity, and pollutants while controlling for day of the week, long-term trends and seasonal effects. Smoothing splines allowing non-linear associations were used for temperature and humidity while pollutants were modeled as linear terms. RESULTS: A 1°C drop below a threshold temperature of 24°C was significantly (p<.0001) associated with AMI hospitalization increases of 3.7% (average lag 0-13 temperature) in Hong Kong, 2.6% (average lag 0-15) in Taipei, and 4.0% (average lag 0-11) in Kaohsiung. No significant heat effects were observed. Among pollutants same day nitrogen dioxide (NO2) levels were the strongest predictors in all three cities, with a 10mg/m(3) increase in NO2 being associated with a 1.1% rise in AMI hospitalization in Hong Kong, and a 10 ppb rise being associated with 4.4% and 2.6% rises in Taipei and Kaohsiung, respectively. CONCLUSIONS: Cool temperatures and higher NO2 levels substantially raised AMI risk in these warm-climate cities and the effect sizes we observed were stronger than those found in previous studies. More attention should be paid to the health dangers of cold weather in warm-climate cities. |
| spellingShingle | Goggins, W Chan, E Yang, C Weather, pollution, and acute myocardial infarction in Hong Kong and Taiwan. |
| title | Weather, pollution, and acute myocardial infarction in Hong Kong and Taiwan. |
| title_full | Weather, pollution, and acute myocardial infarction in Hong Kong and Taiwan. |
| title_fullStr | Weather, pollution, and acute myocardial infarction in Hong Kong and Taiwan. |
| title_full_unstemmed | Weather, pollution, and acute myocardial infarction in Hong Kong and Taiwan. |
| title_short | Weather, pollution, and acute myocardial infarction in Hong Kong and Taiwan. |
| title_sort | weather pollution and acute myocardial infarction in hong kong and taiwan |
| work_keys_str_mv | AT gogginsw weatherpollutionandacutemyocardialinfarctioninhongkongandtaiwan AT chane weatherpollutionandacutemyocardialinfarctioninhongkongandtaiwan AT yangc weatherpollutionandacutemyocardialinfarctioninhongkongandtaiwan |