Covariate | Definition |
IRA | (1) The subject goes to a dentist regularly or occasionally whether or not has a problem, (0) The subject did go to a dental check-up once a year or more often in the previous 5 years. |
Gender | (1) Female, (0) Male. |
Cavit | (1) The subject reported having cavities (tooth decay) in the previous 6 months, (0) if not. |
Loose | (l) The subject had a loose tooth, (0) had not |
Able | (1) The subject able to pay unexpected US$ 500 dental bill, but with difficulty, (0) not able to pay |