Effectiveness of MPOWER policies on initiation and cessation rates
| Policy | Description | Effect on cessation (RR) | Effect on initiation (RR) |
| P (protect) | Clean air laws | 1.1118 | 0.92617 |
| O (offer help) | Cessation support | 1.06117 | NA |
| W (warn) | Mass media and package warnings | 1.2317 | 0.817 |
| E (enforce) | Enforce ad bans | 1.0318 | 0.9418 |
| R (raise) | Raise taxes | Price elasticity of prevalence =−0.2019 | Price elasticity =−0.718 |