Table 2.
Multiple binary logistic regression model between HIV-1 infection (exposure) and bleeding on probing (BOP) ≥ 10% (outcome) adjusted for potential confounders (age, gender, VSB, and smoking) (R2 = 0.430)
| Predictor variables | BOP ≥ 10% | Total (n = 205) | β | SE | p | aOR | 95% CI | |
|---|---|---|---|---|---|---|---|---|
| No (n = 74) | Yes (n = 131) | |||||||
| Age1 | ||||||||
| 18–35 | 37 (50.7) | 30 (23.4) | 67 (33.3) | 1 | ||||
| 36–50 | 29 (39.7) | 76 (59.4) | 105 (52.2) | 1.75 | 0.426 | < 0.0001 | 5.73 | 2.49–13.20 |
| > 50 | 7 (9.6) | 22 (17.2) | 29 (14.5) | 1.84 | 0.601 | 0.002 | 6.29 | 1.94–20.42 |
| Gender | ||||||||
| Male | 32 (43.2) | 75 (57.3) | 107 (52.2) | 1 | ||||
| Female | 42 (56.8) | 56 (42.7) | 98 (47.8) | -0.05 | 0.374 | 0.887 | 0.95 | 0.46–1.97 |
| VSB2 | ||||||||
| < 10% | 30 (41.1) | 8 (6.1) | 38 (18.6) | 1 | ||||
| ≥ 10% | 43 (58.9) | 123 (93.9) | 166 (81.4) | 3.17 | 0.550 | < 0.0001 | 23.68 | 8.07–69.53 |
| Smoking (≥ 1 cigarette by day)3 | ||||||||
| Yes | 20 (27.8) | 49 (38.9) | 69 (34.8) | 1 | ||||
| No | 52 (72.2) | 77 (61.1) | 129 (65.2) | 0.01 | 0.403 | 0.976 | 1.01 | 0.46–2.23 |
| HIV-1 infection2 | ||||||||
| Yes | 17 (23.0) | 57 (43.5) | 74 (36.1) | 1.71 | 0.460 | < 0.0001 | 5.53 | 2.45–13.64 |
| No | 57 (77.0) | 74 (56.5) | 131 (63.9) | 1 | ||||
β regression coefficient, aOR adjusted odds ratio, SE standard error, VSB visible supragingival biofilm.
1Data refers to 201 patients.
2Data refers to 198 patients.
3Data refers to 205 patients.