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Detection frequencies of A. actinomycetemcomitans (Aa) in subgingival plaque samples collected from younger (YP; ≤35 years) and older patients (OP; >35 years) with periodontitis
| A |
B |
|||
|---|---|---|---|---|
| Age groups | n | Aa, n(%) | n | Aa, n(%) |
| YP | 934 | 379 (40.6) | 337 | 162 (48.1) |
| OP | 2,535 | 529 (20.9) | 1,108 | 273 (24.6) |
| YP + OP | 3,459 | 908 (26.3) | 1,445 | 435 (30.1) |
Aa was significantly more prevalent among YP than among OP (A, B; p < 0.001).
A, distribution of Aa-positive samples; B, distribution of Aa-positive patients.
