Table 6.
Analysis of the results of the electrolyte analysis, pulmonary function test, electrocardiography, and chest radiography according to distance from the accident site
|
Characteristic |
Less than 100 m (N = 140) |
100 m-1 Km (N = 173) |
More than 1 Km (N = 35) |
p-value* |
|---|---|---|---|---|
| Mean ± SD | Mean ± SD | Mean ± SD | ||
|
Serum electrolyte |
|
|
|
|
| Calcium (mg/dL) |
9.41 ± 0.37 |
9.41 ± 0.37 |
9.45 ± 0.36 |
0.579 |
| Phosphorus (mg/dL) |
3.44 ± 0.70 |
3.44 ± 0.46 |
3.37 ± 0.35 |
0.767 |
| Spirometry
†
|
|
|
|
|
| FVC (L) |
4.50 ± 0.67 |
4.36 ± 0.75 |
4.59 ± 0.86 |
0.019 |
| FVC% (%) |
90.57 ± 10.01 |
90.68 ± 11.35 |
95.66 ± 11.43 |
0.019 |
| FEV1 (L) |
3.67 ± 0.60 |
3.55 ± 0.62 |
3.64 ± 0.67 |
0.060 |
| FEV1% (%) |
91.80 ± 10.97 |
92.54 ± 11.61 |
95.60 ± 12.58 |
0.104 |
| FEV1/FVC |
81.63 ± 6.56 |
81.58 ± 6.02 |
79.45 ± 6.05 |
0.257 |
| FEF25-75 (L) |
3.70 ± 1.08 |
3.59 ± 0.97 |
3.40 ± 0.97 |
0.366 |
| FEF25-75% (%) | 95.20 ± 24.59 | 97.57 ± 23.85 | 94.80 ± 27.98 | 0.568 |
*Adjusted for age, sex, smoking, time of hospital visit, time of working at accident spot, and respirator protector using ANCOVA test.
†FVC, forced vital capacity; FVC%, FVC percent; FEV1, 1 second forced expiratory volume.
FEV1; FEV1 percent, FEF25-75, forced expiratory flow rate25-75; FEF25-75%; FEF25-75 percent.