Table 4.
Mean values of liver function parameters studied for the various age groups of the oil workers & control subjects
| Age group | Parameter | Non-oilworkers Mean ± SD | Oil workers Mean ± SD | P-value |
|---|---|---|---|---|
|
30-39 (Non-oil workers, n = 5), (Oil workers, n = 97) |
Age |
36.60 ± 1.52 |
35.55 ± 2.69 |
0.651 |
|
Service period |
10.00 ± 4.18 |
11.46 ± 4.34* |
0.000 |
|
|
Total bilirubin |
0.52 ± 0.04 |
0.66 ± 0.18* |
0.035 |
|
|
ALK. PHOS |
62.60 ± 19.83 |
133.41 ± 40.17* |
0.000 |
|
|
AST |
23.00 ± 2.09 |
22.59 ± 9.17 |
0.066 |
|
|
ALT |
16.78 ± 6.30 |
24.02 ± 12.99 |
0.462 |
|
|
40-49 (Non-oil workers, n = 13), (Oil workers, n = 142) |
Age |
45.46 ± 2.60 |
44.27 ± 2.71 |
|
|
Service period |
19.62 ± 7.30 |
16.82 ± 5.34* |
0.005 |
|
|
Total bikirubin |
0.56 ± 0.09 |
0.66 ± 0.20* |
0.041 |
|
|
ALK. PHOS |
66.23 ± 12.40 |
121.62 ± 39.18* |
0.000 |
|
|
AST |
27.35 ± 8.85 |
20.38 ± 8.79* |
0.004 |
|
|
ALT |
24.35 ± 13.80 |
21.30 ± 10.68 |
0.657 |
|
|
50-59 (Non-oil workers, n = 13), (Oil workers, n = 64) |
AGE |
53.92 ± 2.78 |
53.23 ± 2.61 |
|
|
Service period |
24.67 ± 8.29 |
21.97 ± 5.64 |
0.106 |
|
|
Total bilirubin |
0.62 ± 0.17 |
0.66 ± 0.23* |
0.052 |
|
|
ALK. PHOS |
69.25 ± 24.09 |
125.68 ± 39.08* |
0.000 |
|
|
AST |
28.02 ± 5.77 |
23.76 ± 18.03 |
0.236 |
|
| ALT | 22.37 ± 5.87 | 21.43 ± 9.68 | 0.768 |
Multiple Comparisons using Least Significant Difference (LSD) was the statistical method of analysis applied. * indicates statistically significant difference.