| Popis: |
Objective To investigate the possible associations, lag effects and pathogenic characteristics of urban air quality on acute suppurative otitis media (ASOM）in Lanzhou, a city in Northwestern China. Methods SPSS software was used to analyze Spearman correlation between ambient environment-meteorological factors and the daily number of patient ASOM visits. The GAM of time series was used to analyze the exposure -response curve, and R software was used to calculate RR.Using above results to discuss the relationship of air pollutions , meteorological factors and morbidity of ASOM. Results The number of patients with ASOM in 2014, 2015 and 2016 were 916, 875 and 1023 respectively. There was no significant difference in three years (P=0.85). The annual visits peaked in December, the lowest in August, followed by February, Summer was less than the other three seasons. The morbidity of ASOM had a largest peak within 14 years old (53.84%), and the number of male patients 1514 (53.6%) is 1.16 times that of female patients 1309 (46.4%). Spearman correlation analysis showed that the correlation between air pollutions and environmental variables. As for single-day lag effects , there were positive correlations between PM 2.5 , PM 10 , CO, NO 2 , SO 2 and the daily number of ASOM visits, but the correlation between O 3 and ASOM did not pass the significance test . As for multi-day lag effects, PM 2.5 , PM 10 , CO, NO 2 had lagging effects on the daily number of ASOM visits, but the correlation between SO 2 and O 3 did not pass the significant test. There was a positive correlation between ATM and the daily number of patient ASOM visits, and negative correlation between T and the daily number of patient ASOM visits ,while the correlation between W, RH and ASOM was weak. Conclusions The incidence of ASOM has obvious age and seasonal characteristics. There may be some correlation between environmental-meteorological factors and the incidence of ASOM. Therefore, it is of great significance to strengthen environmental control and public health strategy in order to reduce and prevent the occurrence of ASOM diseases. |
