Estimated smoking prevalence in 2020 and 2030 under base case scenario
| WHO region | Prevalence in 2010 | Estimated prevalence in 2020 if no additional control policies are implemented after 2010 | Estimated prevalence in 2030 if no additional control policies are implemented after 2010 | ||||
| Best case | Expected | Worst case | Best case | Expected | Worst case | ||
| AFRO | 15.8 | 16.7 | 19.4 | 23.0 | 18.2 | 21.9 | 26.5 |
| AMRO | 20.5 | 17.0 | 18.0 | 18.9 | 15.6 | 16.7 | 17.8 |
| EMRO | 22.4 | 21.7 | 22.9 | 24.3 | 22.0 | 23.7 | 25.7 |
| EURO | 31.2 | 28.9 | 30.2 | 31.4 | 28.1 | 29.7 | 31.2 |
| SEARO | 20.1 | 18.3 | 18.7 | 19.2 | 17.0 | 17.6 | 18.4 |
| WPRO | 28.5 | 25.8 | 27.6 | 29.3 | 24.1 | 26.3 | 28.5 |
| All regions | 23.7 | 22.1 | 22.7 | 23.3 | 21.2 | 22.0 | 22.7 |