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| Type of use opium | Gender | Frequency, No. (%) | p-value |
|---|---|---|---|
| Oral | Male (34) | 18 (51) | < 0.027 |
| Female (25) | 11 (44) | ||
| Inhalation | Male (34) | 16 (46) | < 0.040 |
| Female (25) | 14 (56) |
Data are expressed as number (%).
χ2 was used for statistical comparisons.
