Table 3. The Odds Ratio and 95% Confidence Interval for Risk Factors for Substance use a.
| Frequency of Usage | OR (95% CI) | P Value |
|---|---|---|
| History of at least one episode of substance usage | ||
| Sex | ||
| Male | 1.5 (1.42 - 2.68) | < 0.001 |
| Female | 1 | |
| Type of universities | ||
| AUJ | 3.07 (2.22 - 4.25) | < 0.001 |
| JUMS | 1 | 0.079 |
| Marital status | ||
| Single | 1.39 (0.96 - 2.01) | 0.068 |
| Married | 1 | |
| Residency of family | < 0.001 | |
| Urban | 1.48 (0.97 - 2.25) | 0.068 |
| Rural | 1 | |
| Students’ place of residence | < 0.001 | |
| Student’s dormitory | 2.03 (1.36 - 3.02) | < 0.001 |
| Living alone | 3.03 (1.74 - 5.28) | < 0.001 |
| Living with their families | 1 | |
| Occasionally substance usage | ||
| Sex | ||
| Male | 2.85 (1.63 - 5.00) | < 0.001 |
| Female | 1 | |
| Type of universities | ||
| AUJ | 3.08 (1.67 - 5.69) | < 0.001 |
| JUMS | 1 | |
| Marital status | ||
| Single | 0.62 (0.30 - 1.31) | 0.213 |
| Married | 1 | |
| Residence place of family | ||
| Urban | 1.18 (0.60 - 2.32) | 0.637 |
| Rural | 1 | |
| Students’ place of residence | ||
| Student’s dormitory | 2.03 (0.99 - 4.18) | 0.053 |
| Living alone | 2.59 (1.19 - 5.65) | 0.017 |
| Living with their families | 1 | |
| Sustained substance usage | ||
| Sex | ||
| Male | 4.62 (2.46 - 8.67) | < 0.001 |
| Female | 1 | |
| Type of universities | ||
| AUJ | 3.74 (1.78 - 7.84) | < 0.001 |
| JUMS | 1 | |
| Marital status | ||
| Single | 1.17 (0.59 - 2.33) | 0.657 |
| Married | 1 | |
| Residence place of family | ||
| Urban | 1.27 (0.63 - 2.58) | 0.505 |
| Rural | 1 | |
| Students’ place of residence | ||
| Student’s dormitory | 1.29 (0.61 - 2.74) | 0503 |
| Living alone | 3.45 (1.70 - 7.00) | < 0.001 |
| Living with their families | 1 |
a Abbreviations: AUJ, Azad University of Jahrom; JUMS, Jahrom University of Medical Sciences; OR, odds ratio; 95% CI, 95% confidence interval.