Objective To explore the correlation of respiratory diseases in respiratory clinic with air quality and temperature in winter. Methods The data of patients in the respiratory clinic in Anyang District Hospital were collected from November 1, 2012 to February 28, 2013. The air quality and weather condition were investigated in the local environmental protection department and meteorological department simultaneously. The number of outpatients,prevalence of main symptoms and main respiratory diseases as preliminary diagnoses were recorded. Their relations with air pollution index (API) and air temperature were analyzed. Results Pearson correlation coefficient of daily API with the outpatients number of the day,the next 1 day and the next 3 days were 0.725, 0.331 and 0.257, respectively (P<0.01), which indicating a positive correlation. The average number of outpatients per day increased by 21.4%, 42.6% and 50.4%, respectively with increased API scale, so did the prevalence of main symptoms and that of main respiratory diseases as preliminary diagnoses. Pearson correlation coefficient of API with cough with sputum, and asthma were 0.287 and 0.277, respectively (P<0.01), which indicating a positive correlation. Pearson correlation coefficient of API with upper respiratory infection, bronchitis, bronchial asthma, and pneumonia were 0.184, 0.251, 0.301 and 0.227, respectively (P<0.05), which indicating a positive correlation. The average number of outpatients was stable when temperature ranged from -3℃to 15℃,increased by 34.5% when temperature ranged from -4℃to -3℃,and increased by 9.3% more when temperature ranged from -5℃to -4℃. Cough was more sensitive to air temperature, and the prevalence of cough increased by 35.7% when temperature ranged from -4℃to -3℃,and increased by 14.0% more when temperature ranged from -5℃to -4℃. Pearson correlation coefficient of air temperature with sinusitis, bronchial asthma, and sputum were -0.194, -0.383 and -0.191, respectively (P<0.05), which indicating a negative correlation. Conclusions In winter,the number of outpatients increases with the increase of API. Respiratory diseases and symptoms are closely related to air quality and temperature.

Citation： HanPeng, XuZhiqiang. Correlation Analysis of Respiratory Diseases in Respiratory Clinic with Air Quality and Temperature in Winter. Chinese Journal of Respiratory and Critical Care Medicine, 2015, 14(2): 197-200. doi: 10.7507/1671-6205.2015050 Copy