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Biomed Environ Sci. 2013 Mar;26(3):222-5. doi: 10.3967/0895-3988.2013.03.009.

Association between diurnal temperature range and respiratory tract infections.

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1
School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, Fudan University, Shanghai 200032, China.

Abstract

OBJECTIVE:

This study aimed to assess the association between emergency-room visits for respiratory tract infection (RTI) with diurnal temperature range (DTR), a weather parameter closely associated with urbanization and global climate change.

METHODS:

We conducted a semiparametric time-series analysis to estimate the percentage increase in emergency-room visits for RTI associated with changes in DTR after adjustment for daily weather conditions (temperature and relative humidity) and outdoor air pollution.

RESULTS:

DTR was significantly associated with daily emergency-room visits for RTI. An increase of 1 °C in the current-day (L0) and in the 2-day moving average (L01) DTR corresponded to a 0.94% [95% confidence interval (CI), 0.34%-1.55%] and 2.08% (95% CI, 1.24%-2.93%) increase in emergency-room visits for RTI, respectively.

CONCLUSION:

DTR was associated with increased risk of RTI. More studies are needed to understand the impact of DTR on respiratory health.

KEYWORDS:

Acute respiratory tract infection; Diurnal temperature range; Time-series

PMID:
23425805
DOI:
10.3967/0895-3988.2013.03.009
[Indexed for MEDLINE]
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