Abstract: Objective To investigate the status and trend of specialty limited due to hearing disorder among college entrance examination students in Beijing from 2009 to 2018. Methods Collecting the ten-year college entrance examination data in Beijing. To analysed the population, time and spatial distribution characteristics of the specialty limited due to hearing disorder. Mann-kendall was used to analyze the trend of specialty limited due to hearing disorder. A thermal map was used to describe the spatio-temporal interaction trend of the detection rate among college entrance examination from 2009 to 2018. Results From 2009 to 2018, a total of 717 342 students in Beijing underwent physical examination for college entrance examination, and 428 cases were detected with specialty limited due to hearing disorder, the detection rate was 6.11 per 10 000. The detection rate of specialty limited due to hearing disorder among college entrance examination in Beijing was in an obvious upward trend(χ²=13.270,P=0.000). The detection rate of urban students was 7.32/10 000, higher than 4.06/10 000 in the suburbs(χ²=31.148,P=0.000). The average detection rate in Fengtai District was the highest, with a total number of 40 cases and a detection rate of 10.91/10 000, and the lowest in Pinggu District, with a total number of 4 cases and a detection rate of 1.64/10 000. There was no significant difference between male and female(6.17/10 000 vs 5.78/10 000, χ²=0.445,P=0.505). Conclusion The trend of specialty limited due to hearing disorder detection rate among college entrance examination students in Beijing was increasing. Hearing health should be managed in the whole life cycle, and adolescents should establish the awareness of protection as early as possible.

Key words: hearing, college entrance examination candidates, specialty limited, characteristics of distribution