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Table 7 Laboratory results with respect to distance from the accident site

From: Acute Symptoms after a Community Hydrogen Fluoride Spill

  Under 100 m 100 m-1 km Over 1 km Crude p-value Adjusted p-value*
  N Mean ± SD N Mean ± SD N Mean ± SD
Complete blood cell count         
 WBC (×103/mm3) 166 6.97 ± 1.60 488 7.11 ± 1.97 471 6.99 ± 1.88 0.548 0.500
 RBC (×106/mm3) 166 4.88 ± 0.46 488 4.79 ± 0.48 471 4.70 ± 0.46 0.000 0.175
 Hemoglobin (g/dL) 166 14.8 ± 1.73 488 14.7 ± 1.67 471 14.0 ± 1.65 0.000 0.172
 Hematocrit (%) 166 44.1 ± 4.44 488 43.5 ± 4.25 471 41.9 ± 4.15 0.000 0.032
 Platelet (×103/mm3) 166 252.8 ± 55.9 488 246.8 ± 51.0 471 254.6 ± 50.7 0.057 0.101
Serum electrolyte            
 Calcium (mg/dL) 172 9.39 ± 0.37 489 9.35 ± 0.36 471 9.32 ± 0.37 0.106 0.226
 Phosphorus (mg/dL) 172 3.57 ± 0.58 489 3.59 ± 0.57 471 3.74 ± 0.63 0.000 0.438
 Sodium (mmol/L) 165 141.9 ± 1.93 485 142.0 ± 2.06 471 141.7 ± 1.79 0.055 0.611
 Potassium (mmol/L) 165 4.13 ± 0.34 485 4.07 ± 0.32 471 4.04 ± 0.28 0.006 0.044
 Chloride (mmol/L) 164 102.9 ± 2.04 485 103.1 ± 2.03 471 103.1 ± 1.84 0.438 0.778
Serum chemistry            
 AST (IU/L) 162 24.0 ± 10.8 476 25.3 ± 12.4 470 23.7 ± 13.5 0.161 0.310
 ALT (IU/L) 162 25.1 ± 16.6 476 26.9 ± 23.7 470 23.5 ± 25.1 0.087 0.466
 r-GTP§ (IU/L) 155 36.8 ± 31.6 473 39.3 ± 52.3 466 27.5 ± 28.9 0.000 0.240
 ALP (IU/L) 158 180.6 ± 62.6 475 177.6 ± 51.2 467 195.8 ± 130.3 0.010 0.136
 Glucose (mg/dL) 156 113.7 ± 48.5 461 105.5 ± 32.9 446 100.1 ± 20.9 0.000 0.038
 Total cholesterol (mg/dL) 159 197.6 ± 36.0 475 194.7 ± 36.0 467 190.7 ± 35.5 0.065 0.816
 Blood urea nitrogen (mg/dL) 161 13.9 ± 3.97 473 13.1 ± 3.89 468 12.7 ± 3.59 0.001 0.109
 Creatinine (mg/dL) 162 0.88 ± 0.14 473 0.89 ± 0.18 469 0.81 ± 0.19 0.000 0.070
 Uric acid (mg/dL) 152 5.62 ± 1.49 460 5.51 ± 1.47 444 5.12 ± 1.45 0.000 0.540
  1. *Adjusted for age and sex, using ANCOVA test.
  2. Aspartate transaminase, Alanine transaminase, §Gamma glutamyl transpeptidase, Alkaline phosphatase.