Crowding out effect of tobacco consumption in Cambodia by household income groups
| Expenditure categories | Low income | Middle income | High income |
| Coefficient | Coefficient | Coefficient | |
| Food | −1.02* | −0.68† | 0.13 |
| Clothing | 0.02 | 0.08 | −0.87‡ |
| Durable goods | 0.08 | 0.36‡ | −0.41 |
| Medical | 0.12 | 0.04 | −0.14 |
| Entertainment | 0.28* | 0.16 | 1.20‡ |
| Education | −0.17 | −0.95‡ | −1.91‡ |
| Housing | 0.48† | 0.74‡ | 0.37 |
| N | 3745 | 7491 | 3746 |
All regression equations are estimated simultaneously; however, the ‘other’ category is dropped to ensure the adding up restriction in the system of equations.
*indicates statistical significance at the 5% level, †indicates statistical significance at the 10% level, ‡Indicates statistical significance at the 1% level.