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Table 2 Comparison between the general characteristics and abnormal symptoms according to working duration at the accident area

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) p-value*
  N % N % N %  
Age (years)        0.972
  < 30 1 2.8 30 83.3 5 13.9  
  30 ~ 39 13 11.9 77 70.6 19 17.4  
  40 ~ 49 11 7.9 114 82.0 14 10.1  
  ≥ 50 3 4.7 51 79.7 10 15.6  
Gender        0.569
  Male 26 7.9 256 78.0 46 14.0  
  Female 2 10.0 16 80.0 2 10.0  
Smoking        0.403
  No smoker 17 7.2 186 78.5 34 14.3  
  Current smoker 11 9.9 86 77.5 14 12.6  
Job        0.001
  Firefighter 16 6.5 184 75.1 45 18.4  
  Police officer 7 15.2 36 78.3 3 6.5  
  Volunteer firefighter 4 11.8 30 88.2 0 0.0  
  Special warfare reserved force 1 4.3 22 95.7 0 0.0  
Abnormal symptoms        
  Throat 8 28.6 45 16.5 22 22.9 0.840
  Nose 3 10.7 30 11.0 8 16.7 0.344
  Eye§ 5 17.9 63 23.2 11 22.9 0.688
  Lung 3 10.7 86 31.6 18 37.5 0.027
  Skin** 2 7.1 32 11.8 4 8.3 0.946
  Heart++ 0 0.0 0 0.0 0 0.0 -
  Nerve‡‡ 1 3.6 22 8.1 7 14.6 0.079
  Stomach‡‡‡ 0 0.0 6 2.2 4 13.8 0.018
  1. *Chi-square test for trend.
  2. Throat pain, change of voice, dry mouth.
  3. Rhinorrhea, nasal obstruction, nasal pain, nasal bleeding.
  4. §Ocular pain, red eye, blurred vision, lacrimination.
  5. Cough, sputum, chest discomfort, dyspnea.
  6. **Skin pruritus, skin rash, skin pain.
  7. ++Palpitation, left chest pain.
  8. ‡‡Fatigue, Headache, dizziness, arm/leg claudication, muscle weakness, inattention, muscle pain.
  9. ‡‡‡Vomiting, dyspepsia, nausea, diarrhea, abdominal pain.