Objective To assess the relationship between diurnal temperature range （DTR） and sudden infant death （SID） between 2001 and 2004 in Shanghai,China.Methods We conducted a time‐stratified case‐crossover analysis t...Objective To assess the relationship between diurnal temperature range （DTR） and sudden infant death （SID） between 2001 and 2004 in Shanghai,China.Methods We conducted a time‐stratified case‐crossover analysis to estimate the percent increase of SID 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 SID.An increase of 1 °C in the current‐day （L0） and in the 2‐day moving average （L01） DTR corresponds to a 1.56% （95% CI：0.97%,2.15%） and a 1.89% （95% CI：1.17%,2.60%） increase in SID,respectively.Conclusion An increased DTR was associated with an increased risk of SID in Shanghai.More studies are needed to understand the effect of DTR on infant deaths.展开更多
基金supported by the National Basic Research Program (973 program) of China (2011CB503802)the National Natural Science Foundation of China (81001228)+2 种基金the National High Technology Research and Development Program of China (863 Program) (2007AA02Z442)the Shanghai Pu Jiang Program (09PJ1401700)the Program for New Century Excellent Talents in University (NCET-09-0314)
文摘Objective To assess the relationship between diurnal temperature range （DTR） and sudden infant death （SID） between 2001 and 2004 in Shanghai,China.Methods We conducted a time‐stratified case‐crossover analysis to estimate the percent increase of SID 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 SID.An increase of 1 °C in the current‐day （L0） and in the 2‐day moving average （L01） DTR corresponds to a 1.56% （95% CI：0.97%,2.15%） and a 1.89% （95% CI：1.17%,2.60%） increase in SID,respectively.Conclusion An increased DTR was associated with an increased risk of SID in Shanghai.More studies are needed to understand the effect of DTR on infant deaths.
