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Table 6 Percentage of SHL stratified by sleep problems

From: Ear diseases among secondary school students in Xi'an, China: The role of portable audio device use, insomnia and academic stress

AIS Score SHL Without SHL Total Percentage of SHL(%)
Normal 19 1282 1301 1.46
Sleeping disorder 3 257 260 1.15
Insomnia 1 5 6 16.67
Total 23 1544 1567 1.47
  1. X 2 = 9.761, P = 0.008