From: Ear diseases among secondary school students in Xi'an, China: The role of portable audio device use, insomnia and academic stress
Gender and Age
Ear disease
Without ear disease
Total
Percentage of ear disease (%)
Gender1
Boy
42
751
793
5.30%
Girl
10
764
774
1.29%
Age2
12-14
13
408
421
3.09%
15-17
36
993
1029
3.50%
18-19
3
114
117
2.56%