Factors associated with current e-cigarette use among men
| Demographic characteristics | Current e-cigarettes users | OR | (95% CI) | P value | |
| Percentage | (95% CI) | ||||
| Age (year) | |||||
| 15–24 | 2.7 | (1.0, 4.3) | 14.4 | (3.5, 59.6) | 0.0003 |
| 25–44 | 2.1 | (1.4, 2.8) | 5.2 | (1.4, 18.3) | 0.0116 |
| 45–64 | 1.2 | (0.8, 1.7) | 3.9 | (1.1, 14.2) | 0.0421 |
| 65+ | 0.2 | (0.0, 0.4) | 1.0 | ||
| Residence | |||||
| Urban | 2.0 | (1.4, 2.6) | 1.5 | (0.9, 2.5) | 0.1289 |
| Rural | 1.1 | (0.6, 1.5) | 1.0 | ||
| Educational level | |||||
| Elementary school and below | 0.5 | (0.2, 0.8) | 1.0 | ||
| Middle school | 1.3 | (0.7, 1.8) | 1.7 | (0.8, 3.7) | 0.1998 |
| High school | 1.7 | (0.8, 2.6) | 2.3 | (1.0, 5.3) | 0.0559 |
| College/university or above | 3.6 | (2.1, 5.1) | 5.8 | (2.2, 14.9) | 0.0003 |
| Smoking status | |||||
| Daily smoker | 3.2 | (2.4, 4.1) | 22.3 | (5.7, 87.6) | <0.0001 |
| Occasionally smoker | 0.9 | (0.1, 1.7) | 3.4 | (0.8, 15.4) | 0.1074 |
| Former smoker | 0.4 | (0.0, 0.8) | 1.9 | (0.3, 12.7) | 0.5233 |
| Never smoker | 0.3 | (0.0, 0.7) | 1.0 | ||
| Income(yuan) | |||||
| <30 000 | 1.1 | (0.6, 1.6) | 1.0 | ||
| 30 000–49999 | 1.5 | (0.5, 2.6) | 1.0 | (0.5, 2.2) | 0.9694 |
| 50 000–99999 | 1.6 | (0.8, 2.5) | 0.8 | (0.4, 1.8) | 0.6595 |
| 100 000 and above | 3.5 | (1.8, 5.2) | 1.7 | (0.8, 3.6) | 0.1383 |