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