TABLE 1.
Periodontal criteriaa
| Subject group | Mean ± SEb
|
||
|---|---|---|---|
| Bone loss (mm) | Attachment loss (mm) | Bleeding on probing | |
| PD− CVD− | 1.88 ± 0.15 | 1.61 ± 0.08 | 0.364 ± 0.053 |
| PD+ CVD− | 6.01 ± 0.43∗ | 5.40 ± 0.23∗∗ | 0.502 ± 0.071∗∗∗ |
| PD− CVD+ | 2.36 ± 0.21 | 1.72 ± 0.04 | 0.308 ± 0.048 |
| PD+ CVD+ | 5.55 ± 0.33∗ | 4.85 ± 0.22∗∗ | 0.485 ± 0.072∗∗∗ |
The periodontal criteria were determined as follows. CVD+, the medical history revealed past or present history of one or more of the following: angina, myocardial infarction, and/or stroke. Periodontal status was defined by attachment loss as follows: <2 mm, no PD (PD−); ≥4 mm, PD (PD+). Statistical analyses included analysis of variance (ANOVA) of mean values ± the SE for patients in each group and ANOVA to test the factors and interaction. The P values for the latter were derived by using the nonparametric Kruskal-Wallis test.
∗, the ANOVA results for bone loss show a highly significant PD effect (P < 0.0001), with no CVD effect (P = 0.97) and a nonsignificant interaction term (P = 0.134). ∗∗, the ANOVA results for attachment loss show a highly significant PD effect (P < 0.0001) and a trend indicating interaction (P = 0.053). ∗∗∗, in comparing bleeding-on-probing data among the groups, there is a significant difference by PD (P = 0.025); there is no difference by CVD or interaction of CVD with PD.