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Table 3 Univariate analysis of influenza-like symptoms for H1N1 (n = 255)

From: Asymptomatic ratio for seasonal H1N1 influenza infection among schoolchildren in Taiwan

Symptom H1N1 Seroconversion n = 80 (%) Tested Negative for H1N1 n = 159 (%) P-value
Fever 53 (66.3%) 36 (22.6%) <.0001*
Sore Throat 37 (56.9%) 48 (36.9%) .0094*
Cough 59 (83.1%) 104 (72.7%) .1246
Headache 31 (50.8%) 26 (21.3%) <.0001*
Vomiting 17 (32.1%) 11 (9.9%) .0007*
Running Nose 55 (82.1%) 113 (80.7%) .8520
Stomach upset 10 (20.0%) 11 (9.8%) .0824
Demographic variables    
Gender    .1657
  Male 34 (43.0%) 82 (53.6%)  
  Female 45 (57.0%) 71 (46.4%)  
Grade    .0172
  Low (1–3) 39 (48.8%) 52 (32.7%)  
  High(4–6) 41 (51.3%) 107 (67.3%)  
  1. *denotes statistically significant at 5% level.