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Table 1 Serum micromineral levels in drug dependent subjects (n = 253) and non-drug dependent controls (n = 100).

From: Serum antioxidant micromineral (Cu, Zn, Fe) status of drug dependent subjects: Influence of illicit drugs and lifestyle

Micromineral (μmol/L)

Drug addict

Non-addict control

P-value*

 

N

%

Mean ± SD

N

%

Mean ± SD

 

Copper

   9.0–10.9

7

2.8

21.6 ± 5.8

20

20.0

15.2 ± 4.1

t = 10.001

   11.0–21.9

132

52.1

 

74

74.0

 

p = 0.002

   22.0–45.0

114

45.1

 

6

6.0

  

Zinc

   5.0–11.5

80

31.6

13.8 ± 4.5

53

53.0

12.3 ± 4.1

t = 3.00

   11.6–18.5

137

54.2

 

39

39.0

 

p = 0.001

   18.6–40.0

36

14.2

 

8

8.0

  

Iron

   8.5–14.5

34

13.4

20.5 ± 6.5

0

 

32.4 ± 8.9

t = 13.94

   14.6–32.2

206

81.4

 

48

48.0

 

p = 0.001

   32.3–42.0

13

5.2

 

52

52.0

  
  1. *Significant (p < 0.05).
  2. Legend: Replicate analyses were carried out for every sample.
  3. Descriptive statistics: Frequencies, descriptive, crosstabs.
  4. Compare means: Independent-sample t-test.