Table 2.
Percent of Persons Who Lost One or More Teeth, and Mean (S.D.) Number of Teeth Lost between Baseline and 48 Months after Baseline, by Selected Characteristics
| Characteristic (n) | Percent of Persons Who Lost One or More Teeth During 48 Months of Follow-up | Percent of Persons Who Lost One or More Teeth, Limited to Persons with at Least One Visit during 48 Months of Follow-up | Mean (S.D.) Number Teeth Lost, Once Limited to Persons with at Least One Visit during 48 Months of Follow-up and Who Lost at Least One Tooth during 48 Months of Follow-up | |||
|---|---|---|---|---|---|---|
| Race | ||||||
| AA (179) | 48%* | 56%* | 4.5 (3.8)* | |||
| non-Hispanic whites (506) | 32% | 33% | 2.7 (3.8) | |||
| missing (1) | ||||||
| Highest level of formal education | ||||||
| 8th grade or less (70) | 65%* | 77%* | 4.7 (3.8)* | |||
| Some high school (247) | 38% | 43% | 3.5 (3.9) | |||
| Some college (368) | 29% | 33% | 2.9 (3.3) | |||
| Missing (1) | ||||||
| Household income | ||||||
| Below $20,000 (291) | 47%* | 52%* | 3.6 (3.5)ns | |||
| At or above $20,000 (366) | 28% | 29% | 2.8 (3.6) | |||
| Missing (29) | ||||||
| Poverty status | ||||||
| Below 100% poverty level (99) | 54%* | 63%* | 5.2 (3.6)* | |||
| At or above the 100% level (552) | 32% | 33% | 2.6 (3.4) | |||
| Missing (36) | ||||||
| Ability to pay | ||||||
| Not able to pay (78) | 48%* | 61%* | 4.3 (3.7)* | |||
| Able to pay, but with diff. (269) | 41% | 45% | 3.5 (3.8) | |||
| Able to pay comfortably (337) | 29% | 29% | 2.6 (2.9) | |||
| Missing (2) | ||||||
| Has dental insurance | ||||||
| Yes (235) | 31%ns | 32%* | 3.2 (3.8)ns | |||
| No (450) | 38% | 41% | 3.3 (3.4) | |||
Statistically significant, p<.05
The unit of analysis in this table is the person, not the tooth. This table is limited to persons who participated for the 48-month clinical examination (n=687). Statistical differences in percentages were tested using Pearson χ2 or Mantel-Haenszel χ2 trend tests. Means were tested using Duncan's multiple range tests.
In contrast to results in Table 3, results in this table used a single observation interval 48 months in length; two consecutive 24-month intervals were not used. This was done so that sample sizes for each stratum would sum to the total number of persons in the stratum observed, not person-intervals.