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Table 5 Analysis of the individual symptoms according to working time

From: Acute Symptoms in Firefighters who Participated in Collection Work after the Community Hydrogen Fluoride Spill Accident

  Less than 1 hours (N = 28) 1-10 hours (N = 272) More than 10 hours (N = 48) Total p-value*
  N % N % N % N %  
Throat          
  Throat pain 8 32.0 45 12.6 11 13.3 64 13.7 0.840
Nose          
  Rhinorreha 2 8.0 23 6.4 7 8.4 32 6.9 0.207
  Nasal obstruction 1 4.0 6 1.7 2 2.4 9 1.9 0.726
  Nasal pain 0 0.0 3 0.8 0 0.0 3 0.6 0.830
Eye          
  Ocular pain 4 16.0 45 12.6 6 7.2 55 11.8 0.713
  Red eye 1 4.0 10 2.8 1 1.2 12 2.6 0.663
  Blurred vision 0 0.0 7 2.0 3 3.6 10 2.1 0.094
  Lacrimination 0 0.0 7 2.0 2 2.4 9 1.9 0.281
Lung          
  Cough 2 8.0 49 13.7 12 14.5 63 13.5 0.056
  Sputum 0 0.0 33 9.2 8 9.6 41 8.8 0.043
  Chest discomfort 1 4.0 24 6.7 5 6.0 30 6.4 0.349
  Dyspnea 0 0.0 4 1.1 0 0.0 4 0.9 0.803
Skin          
  Skin pruritus 2 8.0 18 5.0 1 1.2 21 4.5 0.285
  Skin rash 1 4.0 9 2.5 2 2.4 12 2.6 0.884
  Skin pain 0 0.0 6 1.7 1 1.2 7 1.5 0.623
Nerve          
  Fatigue 2 8.0 21 5.9 9 10.8 32 6.9 0.039
  Headache 1 4.0 23 6.4 6 7.2 30 6.4 0.178
  Dizziness 0 0.0 5 1.4 2 2.4 7 1.5 0.189
  Arm/leg claudication 0 0.0 6 1.7 0 0.0 6 1.3 0.760
Stomach          
  Vomiting 0 0.0 3 0.8 4 4.8 7 1.5 0.003
Other 0 0.0 11 3.1 1 1.2 12 2.6 0.844
Total 25 100.0 358 100.0 83 173.2 466 100.0  
  1. *Chi-square test for trend.