Table 5 Value ranges and means of liver function parameters studied for the various exposure periods (service years) of the oil workers & control subjects

1-5

23

Total bilirubin

0.5 -1.00

0.66 ± 0.14

0.134

0- 1.00 mg/dl

6-10

14

0.5 -1.20

0.71 ± 0.20

0.027

11-15

128

0.4 -1.30

0.64 ± 0.18

0.123

16-20

56

0.4 -1.00

0.64 ± 0.15

0.161

21-25

61

0.4 -1.30

0.69 ± 0.23

0.011*

26-35

21

0.3 -1.60

0.75 ± 0.31

0.001*

Control

30

0.5-1.00

0.58 ± 0.13

Total

333

0.3-1.60

0.65 ± 0.19

1-5

23

ALK. PHOS

82.00 -193.00

127.00 ± 32.09

0.000*

50-250 U/L

6-10

14

84.00 - 220.00

137.50 ± 36.63

0.000*

11-15

128

58.00 - 270.00

129.68 ± 40.17

0.000*

16-20

56

50.00 - 286.00

125.59 ± 43.81

0.000*

21-25

61

51.00 - 296.00

120.51 ± 40.14

0.000*

26-35

21

61.00 - 163.00

114.90 ± 28.14

0.000*

Control

30

40.00-111.00

66.83 ± 18.54

Total

333

40.00 - 296.00

120.86 ± 41.70

1-5

23

AST

8.2 - 40.20

21.78 ± 6.88

0.101

0-45 U/L (M), 0-35 U/L (F)

6-10

14

11.1 - 38.30

22.94 ± 8.31

0.278

11-15

128

6.7 - 50.20

22.05 ± 8.98

0.034*

16-20

56

5.8 - 65.00

21.79 ± 10.86

0.045*

21-25

61

6.6 - 140.20

22.08 ± 17.94

0.055

26-35

21

8.1 - 39.30

18.87 ± 9.12

0.013*

Control

30

18 - 44.00

26.89 ± 6.99

Total

333

5.8 - 140.20

22.26 ± 11.25

1-5

23

ALT

9.1 - 49.70

20.93 ± 10.65

0.657

0-45 U/L (M), 0-35 U/L (F)

6-10

14

10.7 - 42.40

23.76 ± 9.66

0.685

11-15

128

7.0 - 86.60

24.11 ± 13.36

0.422

16-20

56

6.7 - 52.20

21.21 ± 9.36

0.665

21-25

61

4.9 - 48.60

19.34 ± 9.03

0.235

26-35

21

6.7 - 37.30

20.97 ± 7.75

0.674

Control

30

10.0 - 55.00

22.30 ± 10.22

Total

333

4.9 - 86.60

22.15 ± 11.17