Table 2.
Multilevel Poisson Regression Analysis (considering the subject level) to assess the factors that influenced the percentage of BDs of histatin 1 degradation.
| Univariate |
Adjusted |
||||
|---|---|---|---|---|---|
| Variable |
% BD (mean ± S.D.) |
IRR (CI 95%) |
P-value |
IRR (CI 95%) |
p-value |
| Groups | |||||
| G2 -Control (ref) | 84.5 ± 16.1 | ||||
| G3 -Gingivitis | 81.9 ± 18.4 | 0.96 (0.88–1.06) | 0.495 | 0.96 (0.88–1.06) | 0.495 |
| G1 -CP + Gingivitis | 69.5 ± 28.3 | 0.82 (0.74–0.91) | <0.001∗ | 0.82 (0.74–0.91) | <0.001∗ |
| Sex | |||||
| Female (ref) | 79.3 ± 23.6 | ||||
| Male | 77.6 ± 20.9 | 0.97 (0.88–1.08) | 0.664 | - | - |
| Age (years) | |||||
| Continuous | - | 1.00 (0.95–1.06) | 0.759 | - | - |
| Salivary flow | |||||
| Continuous | - | 1.14 (0.83–1.56) | 0.413 | - | - |
| OHI–S | |||||
| Continuous | - | 0.94 (0.80–1.09) | 0.452 | - | - |
| Visible biofilm | |||||
| Continuous | - | 0.87 (0.71–1.06) | 0.188 | ||
| Calculus | |||||
| Continuous | - | 0.96 (0,69–1,34) | 0,845 | - | - |
| GI | |||||
| Continuous | - | 0.84 (0.76–0.92) | <0.001∗ | - | - |
| Time | |||||
| Continuous | - | 0.91 (0.89–0.93) | <0.001∗ | 0.91 (0.89–0.93) | <0.001∗ |
CP + gingivitis in relation to Gingivitis: IRR = 0.84; CI = 0.75–0.96; p = 0.009∗. CI = 95%; p < 0.05∗
S.D.: Standard deviation; ref: Reference; G1: CP with gingivitis; G2: without CP and without gingivitis; G3: without CP with gingivitis (n = 8/group).