Apparent temperature and cause-specific emergency hospital admissions in Greater Copenhagen, Denmark
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Apparent temperature and cause-specific emergency hospital admissions in Greater Copenhagen, Denmark. / Wichmann, Janine; Andersen, Zorana; Ketzel, Matthias; Ellermann, Thomas; Loft, Steffen.
In: P L o S One, Vol. 6, No. 7, 01.01.2011, p. e22904.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - Apparent temperature and cause-specific emergency hospital admissions in Greater Copenhagen, Denmark
AU - Wichmann, Janine
AU - Andersen, Zorana
AU - Ketzel, Matthias
AU - Ellermann, Thomas
AU - Loft, Steffen
PY - 2011/1/1
Y1 - 2011/1/1
N2 - One of the key climate change factors, temperature, has potentially grave implications for human health. We report the first attempt to investigate the association between the daily 3-hour maximum apparent temperature (Tapp(max)) and respiratory (RD), cardiovascular (CVD), and cerebrovascular (CBD) emergency hospital admissions in Copenhagen, controlling for air pollution. The study period covered 1 January 2002-31 December 2006, stratified in warm and cold periods. A case-crossover design was applied. Susceptibility (effect modification) by age, sex, and socio-economic status was investigated. For an IQR (8°C) increase in the 5-day cumulative average of Tapp(max), a 7% (95% CI: 1%, 13%) increase in the RD admission rate was observed in the warm period whereas an inverse association was found with CVD (-8%, 95% CI: -13%, -4%), and none with CBD. There was no association between the 5-day cumulative average of Tapp(max) during the cold period and any of the cause-specific admissions, except in some susceptible groups: a negative association for RD in the oldest age group and a positive association for CVD in men and the second highest SES group. In conclusion, an increase in Tapp(max) is associated with a slight increase in RD and decrease in CVD admissions during the warmer months.
AB - One of the key climate change factors, temperature, has potentially grave implications for human health. We report the first attempt to investigate the association between the daily 3-hour maximum apparent temperature (Tapp(max)) and respiratory (RD), cardiovascular (CVD), and cerebrovascular (CBD) emergency hospital admissions in Copenhagen, controlling for air pollution. The study period covered 1 January 2002-31 December 2006, stratified in warm and cold periods. A case-crossover design was applied. Susceptibility (effect modification) by age, sex, and socio-economic status was investigated. For an IQR (8°C) increase in the 5-day cumulative average of Tapp(max), a 7% (95% CI: 1%, 13%) increase in the RD admission rate was observed in the warm period whereas an inverse association was found with CVD (-8%, 95% CI: -13%, -4%), and none with CBD. There was no association between the 5-day cumulative average of Tapp(max) during the cold period and any of the cause-specific admissions, except in some susceptible groups: a negative association for RD in the oldest age group and a positive association for CVD in men and the second highest SES group. In conclusion, an increase in Tapp(max) is associated with a slight increase in RD and decrease in CVD admissions during the warmer months.
U2 - 10.1371/journal.pone.0022904
DO - 10.1371/journal.pone.0022904
M3 - Journal article
C2 - 21829550
VL - 6
SP - e22904
JO - PLoS ONE
JF - PLoS ONE
SN - 1932-6203
IS - 7
ER -
ID: 35372429