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 | |||