TABLE 6.
Baseline demographics of students in the longitudinal phase of the study
| Characteristic | No. (%) of studentsa
|
|
|---|---|---|
| A. actinomycetemcomitans positive (n= 38) | A. actinomycetemcomitans negative (n = 58) | |
| Ethnicity | ||
| African-American | 18 (47.7) | 25 (43.1) |
| Hispanic | 18 (47.7) | 33 (56.9) |
| Asian | 1 (2.6) | 0 (0.0) |
| Other | 1 (2.6) | 0 (0.0) |
| Gender | ||
| Male | 20 (52.6) | 28 (48.2) |
| Female | 18 (47.4) | 30 (51.7) |
a
The mean ± standard deviation ages of the A. actinomycetemcomitans-positive and -negative groups are 15.7 ± 0.3 and 14.4 ± 0.2 years, respectively.