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Table 1 Epidemiological and clinical features by examine NV in AGE, asymptomatic patients

From: Epidemiological and molecular analysis of human norovirus infections in Taiwan during 2011 and 2012

  AGE patients (n = 155)     Asymptomatic patients (n = 98)  
  NV Negative     NV Negative  
Parameter (n = 17) (n = 138) P a ORd 95% CId (n = 7) (n = 91) P b
Detection rate (%) 11 -     7.1 -  
Sex (male: female) 10:7 74:64     5:2 47:44  
Setting         
  Outpatient (38,15) c 2(11.8) 36(26.1) - - - 3(42.8) 12(13.2) -
  Emergency (6,0) c - 6(4.3) - - - - - -
  Inpatient (111,83) c 15(88.2) 96(69.6) - - - 4(57.2) 79(86.8) -
Age         
  <10 9(52.9) 23(16.7) 0.002 5.6 2.0-16.1 1(14.3) 4(4.4) -
  10-40 3(17.7) 28(20.3) - -   2(28.6) 5(5.5) -
  >40 5(29.4) 87(63.0) 0.016 0.2 0.1-0.7 4(57.1) 82(90.1) -
Season         
  Spring 3(17.6) 54(39.1) - - - - 23(25.3) -
  Summer 2(11.8) 42(30.4) - - - 4(57.1) 45(49.4) -
  Fall 2(11.8) 10(7.3) - - - - 10(11.0) -
  Winter 10(58.8) 32(23.2) 0.004 4.7 1.7-13.4 3(42.9) 13(14.3) -
Water type         
  Tap water 12(70.6) 118(85.5) - - - 6(85.7) 81(89.0) -
  Underground water - 2(1.4) - - - - - -
  Spring water 4(23.5) 7(5.1) 0.022 5.8 1.5-22.3 - 2(2.2) -
  Miss data 1(5.9) 11(8.0) - - - 1(14.3) 8(8.8) -
Fever >38°C (%)     - -    
  Yes 9(52.9) 47(34.1) - 2.5 0.9-7.1 2(28.6) 21(23.1) -
  No 7(41.2) 91(65.9) - - - 5(71.4) 70(76.9) -
  Miss data 1(5.9) - - - - - - -
Vomiting         
  Yes 7(41.2) 28(20.3) - 2.7 0.9-7.7 - 6(6.6) -
  No 10(58.8) 108(78.3) - - - 7(100) 85(93.4) -
  Miss data - 2(1.4) - - - - - -
Stool type         
  Watery 8(47.1) 49(35.5) - - - - 1(1.1) -
  Bloody 1(5.8) 18(13.0) - - - - 3(3.3) -
  Non-watery, non-bloody 8(47.1) 71(51.5) - - - 7(100) 87(95.6) -
Abdominal pain         
  Yes 9(52.9) 84(60.9) - - - - 19(20.9) -
  No 7(41.2) 52(37.7) - - - 7(100) 72(79.1) -
  Miss data 1(5.9) 2(1.4) - - - - - -
  1. Only significant p value (<0.05) reported.
  2. a two-tailed Chi-Square, Fisher’s exact test comparing AGE patient and negative cases.
  3. b two-tailed Chi-Square, Fisher’s exact test comparing asymptomatic patient and negative cases.
  4. c the table in parentheses refer to the former is AGE patients and the latter is asymptomatic patients number.
  5. d OR odds ratio, CI confidence interval.