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Table 2 Hepatitis B cases reported to the National Notifiable Disease Reporting System by original and revised* case classification from six project hospitals in Fujian, Hainan, and Gansu Provinces, China, 2015

From: Using a hepatitis B surveillance system evaluation in Fujian, Hainan, and Gansu provinces to improve data quality and assess program effectiveness, China, 2015

  Cases Acute Hepatitis B Chronic Hepatitis B
Reported Revised % Accurate χ2, p-value Reported Revised % Accurate χ2, p-value
Province      < 0.001     0.18
 Fujian 881 12 1 8.3   869 538 61.9  
 Hainan 267 102 17 16.7 165 93 56.4
 Gansu 272 238 5 2.10 34 17 50.0
Hospital Grade      0.004     0.41
 2 406 223 21 9.4   183 106 57.9  
 3 1014 129 2 1.6 885 542 61.3
Gender      1.0     < 0.001
 Male 991 218 14 6.4   773 498 64.4  
 Female 429 134 9 6.7 295 150 50.9
Age group(year)     0.33#     0.007
 0–24 130 45 5 11.1   85 60 70.6  
 25–39 417 91 6 6.6 326 206 63.2
 40–59 610 144 10 6.9 466 285 61.2
  ≥ 60 263 72 2 2.8 191 97 50.8
HBV related departments    < 0.001     < 0.001
 Yes 819 120 17 14.2   699 530 75.8  
 No 601 232 6 2.6 369 118 32.0
Primary discharge diagnosis   < 0.001     < 0.001
 Yes 512 62 18 29.0   450 438 97.3  
 No 908 290 5 1.7 618 210 34.0
Total 1420 352 23 6.5   1068 648 60.7  
  1. *Revised case-classification based on information abstracted from patients’ medical record
  2. # Fisher’s exact tests