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Table 1 Basic information of outbreaks in two schools, 2018

From: An outbreak of epidemic keratoconjunctivitis caused by human adenovirus type 8 in primary school, southwest China

Variables County ethnic primary school Township central primary school P value
Number of students (staff) in school 515(44) 730(54)  
Number of cases among students (staff) 170(1) 159(1)  
Number of classes (grades) in school 12(3) 19(6)  
Number of classes (grades) case occurred 12(3) 19(6)  
Average (max, min) number of cases in class 14.17(29,2) 8.32(20,1)  
Date of onset for index case (date/month) 18/5 23/5  
Date of onset for last case (date/month) 10/7 6/7  
Epidemic duration (day) 54 45  
Number of cases (attack rate %) 171(30.59) 160(20.41) <0.001
Disease course (day)- average (max, min) 9.40(7, 23)  
Characteristic of cases
 Gender (%)    <0.001
  male 89(52.05) 117(73.12)  
  female 82(47.95) 43(26.88)  
 Age- median (max, min) 12.34(9.91, 29.53) 11.00(7, 37)