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Table 3 Chief complaints of early and late patients

From: Acute Symptoms after a Community Hydrogen Fluoride Spill

Chief complaint Early patients * Late patients Total p-value
N % N % N %
Sore throat 37 23.3 394 24.2 431 24.1 0.797
Headache 25 15.7 316 19.4 341 19.1 0.260
Cough 8 5.0 228 14.0 236 13.2 0.001
Eye irritation 17 10.7 147 9.0 164 9.2 0.487
No symptom 6 3.8 105 6.4 111 6.2 0.183
Shortness of breath 43 27.0 57 3.5 100 5.6 0.000
Chest pain 3 1.9 63 3.9 66 3.7 0.206
Dizziness 2 1.3 54 3.3 56 3.1 0.155
Nausea 10 6.3 43 2.6 53 3.0 0.010
Rhinorrhea 0 0.0 53 3.3 53 3.0 0.021
Skin burning 2 1.3 36 2.2 38 2.1 0.427
Itching 0 0.0 32 2.0 32 1.8 0.075
Sputum 1 0.6 26 1.6 27 1.5 0.340
Nasal pain 1 0.6 14 0.9 15 0.8 0.761
Skin rash 0 0.0 7 0.4 7 0.4 0.408
Vomiting 0 0.0 2 0.1 2 0.1 0.658
Others 4 2.5 52 3.2 56 3.1 0.640
Total 159 100.0 1629 100.0 1788 100.0  
  1. * Early patients: hospital visit within 3 days.
  2. † Late patients: hospital visit 4 days or after.
  3. ‡ Chi-squared test.