Prevalence of illicit cigarettes in Vietnam (%)
| TCS 2017 | VITA 2012 | |
| Overall | 13.72 | 20.7 |
| (11.85 to 15.83) | ||
| By origin | ||
| Domestic | 0.00 | N/A |
| Foreign | 100.00 | N/A |
| By region | ||
| North | 10.02 | 7.1 |
| (4.54 to 20.7) | ||
| Central | 5.85 | 5.6 |
| (3.48 to 9.69) | ||
| South | 84.13 | 87.3 |
| (74.75 to 90.47) |
The TCS 2017 results are estimated by the authors while the VITA 2012 results are retrieved from the prior study conducted by Nguyen et al. 10 Overall represents illicit consumption’s weighted share of the total cigarette consumption. Domestic and Foreign represents domestic brands’ and foreign brands’ weighted shares of the total illicit consumption, respectively. North, Central and South represents weighted shares corresponding to the North, Central and South regions in the national illicit market. For TCS 2017, 95% CIs are reported in parenthesis.
TCS 2017, Tobacco Consumption Survey in 2017; VITA 2012, Vietnam Illicit Trade Assessment in 2012.