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Article: Weather, season, and daily stroke admissions in Hong Kong

TitleWeather, season, and daily stroke admissions in Hong Kong
Authors
KeywordsGeneralized additive models
Humidity
Incidence
Meteorology
Mortality
Stroke
Temperature
Issue Date2012
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00484/index.htm
Citation
International Journal Of Biometeorology, 2012, v. 56 n. 5, p. 865-872 How to Cite?
AbstractPrevious studies examining daily temperature and stroke incidence have given conflicting results. We undertook this retrospective study of all stroke admissions in those aged 35 years old and above to Hong Kong public hospitals from 1999 through 2006 in order to better understand the effects of meteorological conditions on stroke risk in a subtropical setting. We used Poisson Generalized Additive Models with daily hemorrhagic (HS) and ischemic stroke (IS) counts separately as outcomes, and daily mean temperature, humidity, solar radiation, rainfall, air pressure, pollutants, flu consultation rates, day of week, holidays, time trend and seasonality as predictors. Lagged effects of temperature, humidity and pollutants were also considered. A total of 23,457 HS and 107,505 IS admissions were analyzed. Mean daily temperature had a strong, consistent, negative linear association with HS admissions over the range (8. 2-31. 8°C) observed. A 1°C lower average temperature over the same day and previous 4 days (lags 0-4) being associated with a 2. 7% (95% CI: 2. 0-3. 4%, P <. 0. 0001) higher admission rate after controlling for other variables. This association was stronger among older subjects and females. Higher lag 0-4 average change in air pressure from previous day was modestly associated with higher HS risk. The association between IS and temperature was weaker and apparent only below 22°C, with a 1°C lower average temperature (lags 0-13) below this threshold being associated with a 1. 6% (95% CI:1. 0-2. 2%, P < 0. 0001) higher IS admission rate. Pollutant levels were not associated with HS or IS. Future studies should examine HS and IS risk separately. © 2011 ISB.
Persistent Identifierhttp://hdl.handle.net/10722/160692
ISSN
2015 Impact Factor: 2.309
2015 SCImago Journal Rankings: 0.708
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorGoggins, WBen_HK
dc.contributor.authorWoo, Jen_HK
dc.contributor.authorHo, Sen_HK
dc.contributor.authorChan, EYYen_HK
dc.contributor.authorChau, PHen_HK
dc.date.accessioned2012-08-16T06:16:54Z-
dc.date.available2012-08-16T06:16:54Z-
dc.date.issued2012en_HK
dc.identifier.citationInternational Journal Of Biometeorology, 2012, v. 56 n. 5, p. 865-872en_HK
dc.identifier.issn0020-7128en_HK
dc.identifier.urihttp://hdl.handle.net/10722/160692-
dc.description.abstractPrevious studies examining daily temperature and stroke incidence have given conflicting results. We undertook this retrospective study of all stroke admissions in those aged 35 years old and above to Hong Kong public hospitals from 1999 through 2006 in order to better understand the effects of meteorological conditions on stroke risk in a subtropical setting. We used Poisson Generalized Additive Models with daily hemorrhagic (HS) and ischemic stroke (IS) counts separately as outcomes, and daily mean temperature, humidity, solar radiation, rainfall, air pressure, pollutants, flu consultation rates, day of week, holidays, time trend and seasonality as predictors. Lagged effects of temperature, humidity and pollutants were also considered. A total of 23,457 HS and 107,505 IS admissions were analyzed. Mean daily temperature had a strong, consistent, negative linear association with HS admissions over the range (8. 2-31. 8°C) observed. A 1°C lower average temperature over the same day and previous 4 days (lags 0-4) being associated with a 2. 7% (95% CI: 2. 0-3. 4%, P <. 0. 0001) higher admission rate after controlling for other variables. This association was stronger among older subjects and females. Higher lag 0-4 average change in air pressure from previous day was modestly associated with higher HS risk. The association between IS and temperature was weaker and apparent only below 22°C, with a 1°C lower average temperature (lags 0-13) below this threshold being associated with a 1. 6% (95% CI:1. 0-2. 2%, P < 0. 0001) higher IS admission rate. Pollutant levels were not associated with HS or IS. Future studies should examine HS and IS risk separately. © 2011 ISB.en_HK
dc.languageengen_US
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00484/index.htmen_HK
dc.relation.ispartofInternational Journal of Biometeorologyen_HK
dc.subjectGeneralized additive modelsen_HK
dc.subjectHumidityen_HK
dc.subjectIncidenceen_HK
dc.subjectMeteorologyen_HK
dc.subjectMortalityen_HK
dc.subjectStrokeen_HK
dc.subjectTemperatureen_HK
dc.titleWeather, season, and daily stroke admissions in Hong Kongen_HK
dc.typeArticleen_HK
dc.identifier.emailChau, PH: phpchau@hku.hken_HK
dc.identifier.authorityChau, PH=rp00574en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s00484-011-0491-9en_HK
dc.identifier.pmid21915799-
dc.identifier.scopuseid_2-s2.0-84865637446en_HK
dc.identifier.hkuros202922en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84865637446&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume56en_HK
dc.identifier.issue5en_HK
dc.identifier.spage865en_HK
dc.identifier.epage872en_HK
dc.identifier.isiWOS:000307408700008-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridGoggins, WB=6701315434en_HK
dc.identifier.scopusauthoridWoo, J=36040369400en_HK
dc.identifier.scopusauthoridHo, S=7403716908en_HK
dc.identifier.scopusauthoridChan, EYY=16681853700en_HK
dc.identifier.scopusauthoridChau, PH=7102266397en_HK
dc.identifier.citeulike9815184-

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