Table 3. Correlation between periodontal parameters and bacterial load with adjusting confounders.
| Percentage of ≥ 4 mm PPD | Percentage of BOP | ||||
|---|---|---|---|---|---|
| Step | b | P-value | b | P-value | |
| 1 | Constant | ||||
| P. gingivalis | 0.15 [0.14, 1.17] |
0.02 | 0.09 [-0.28, 1.67] |
NS | |
| Fretibacterium sp. HOT 360 | 0. 35 [0.67, 2.01] |
< 0.01 | 0.36 [1.66, 4.13] |
< 0.01 | |
| TM7 sp. HOT 356 | 0.10 [-0.18, 1.12] |
NS | 0.09 [-0.53, 2.25] |
NS | |
| 2 | Constant | ||||
| P. gingivalis | 0.14 [0.05, 1.15] |
0.04 | 0.11 [-0.22, 1.89] |
NS | |
| Fretibacterium sp. HOT 360 | 0.32 [0.68, 2.02] |
< 0.01 | 0.35 [1.46, 4.04] |
< 0.01 | |
| TM7 sp. HOT 356 | 0.13 [-0.09, 1.49] |
NS | 0.06 [-0.73, 1.94] |
NS | |
| Gender | 0.01 [−1.78, 2.03] |
NS | 0.02 [-0.14, 0.16] |
NS | |
| Number of teeth | -0.04 [−0.26, 0.14] |
NS | 0.03 [-0.28, 0.49] |
NS | |
| Age | -0.001 [-0.08, 0.09] |
NS | 0 [-0.34, 0.36] |
NS | |
| Frequency of tooth brushing | -0.02 [-1.27, 0.97] |
NS | -0.07 [-3.37, 0.89] |
NS | |
| Duration of tooth brushing | 0.55 [-0.26, 0.14] |
NS | -0.01 [-0.18, 0.12] |
NS | |
| Frequency of brush changing | 0.03 [-0.87, 1.39] |
NS | 0.06 [-1.12, 3.10] |
NS | |
| Use of special appliance | -0.07 [-0.91, 0.37] |
NS | 0.09 [-2.14, 6.10] |
NS | |
| Smoking history | -0.07 [−2.36, 0.71] |
NS | 0.77 [-1.32, 4.89] |
NS | |
| Alcohol consumption | -0.05 [-0.49, 0.22] |
NS | -0.12 [-1.27, 0.01] |
NS | |
Note: The data of multiple regression were demonstrated with beta [lower, upper of 95% confident interval value]
PPD: Step 1, R2 = 0.17; Step 2, ΔR2 = 0.14, BOP: Step 1, R2 = 0.18; Step 2, ΔR2 = 0.18
BOP, bleeding on brushing; PPD, probing pocket depth; NS, not significant.