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Table 5 Univariate linear regression analysis for associations between BLL and clinical symptoms, type of substance, route of use, duration of use or daily quantity of consumption

From: Lead poisoning among opium users in Iran: an emerging health hazard

Variable

B (SE)

95% CI

t

p-value

Type of substance (opium)

0.36 (0.22)

−0.1, 0.79

1.67

0.09

Route of use (oral route)

0.23 (0.16)

−0.1, 0.55

1.44

0.15

Duration of use

0.009 (0.01)

−0.02, 0.04

0.63

0.53

Daily quantity of consumption

0.08 (0.26)

−0.44, 0.60

0.29

0.77

Abdominal pain (yes)

0.98 (0.25)

0.85, 1.05

1.89

0.03

Constipation (yes)

0.13 (0.31)

−0.09, 0.68

0.75

0.68

Arthralgia (yes)

0.05 (0.33)

−0.05, 0.24

0.23

0.88

Myalgia (yes)

1.16 (0.34)

1.08, 1.38

2.12

0.006

Anorexia (yes)

0.58 (0.30)

0.34,0.72

1.79

0.04

Nausea (yes)

0.32 (0.33)

−0.08, 0.65

0.99

0.33

Peripheral neuropathy (yes)

0.71 (0.69)

−0.1, 0.98

1.12

0.30

Weakness (yes)

0.19 (0.33)

−0.05, 0.85

0.61

0.55

Insomnia (yes)

0.21 (0.28)

−0.04, 0.83

0.77

0.44

  1. F = 1.98, dfb = 13, dfw = 236, p-value = 0.04