Explanatory variable | Unadjusted OR (95% CI) | P-value | Adjusted OR (95% CI) | P-value |
---|---|---|---|---|
Sex | ||||
  Male | 5.51 (3.81-7.96) | <0.001 | 4.32 (2.59-7.22) | <0.001 |
  Female | 1.0 |  | 1.0 |  |
  Age | 1.33 (1.22-1.46) | <0.001 | 1.20 (1.05-1.38) | <0.01 |
Grade | ||||
  9th | 0.52 (0.35-0.78) | 0.002 | 1.31 (0.67-2.56) | 0.43 |
  10th | 0.71 (0.45-1.10) | 0.13 | 0.97 (0.49-1.87) | 0.92 |
  11th | 0.69 (0.42-1.14) | 0.15 | 1.22 (0.63-2.36) | 0.55 |
  12th | 1.0 |  | 1.0 |  |
Marital status | ||||
  Single | 0.42 (0.254-0.685) | 0.04 | 0.52 (0.22-1.21) | 0.128 |
  Married | 1.0 |  | 1.0 |  |
Religion | ||||
  Orthodox Christian | 1.19 (0.36-4.02) | 0.77 | 4.21 (0.49-36.02) | 0.19 |
  Protestant | 3.81 (0.95-15.31) | 0.06 | 9.92 (0.93-106.21) | 0.06 |
  Catholic | 1.26 (0.37-4.29) | 0.71 | 3.06 (0.35-26.65) | 0.31 |
  Muslim | 0.90 (0.25-3.28) | 0.86 | 3.78 (0.41-34.62) | 0.24 |
  Others | 1.0 |  | 1.0 |  |
Having friend who smokes cigarette | ||||
  Yes | 10.13 (7.16-14.34) | 0.002 | 8.14 (5.19-12.70) | <0.01 |
  No | 1.0 |  | 1.0 |  |
Living with peoples who smokes cigarette | ||||
  Yes | 2.37(1.75-3.20) | 0.03 | 1.25 (0.81-1.92) | 0.313 |
  No | 1.0 |  | 1.0 |  |