Table 3.
Multiple binary logistic regression model between HIV-1 infection (exposure) and detection of ≥ 3 sites with PPD ≥ 5 mm and/or CAL ≥ 4 mm (outcome) adjusted for potential confounders (age, gender, VSB and smoking) (R2 = 0.461)
| Predictor variables | ≥ 3 sites with PPD ≥ 5 mm and/or CAL ≥ 4 mm | Total (n = 205) | β | SE | p | aOR | 95% CI | |
|---|---|---|---|---|---|---|---|---|
| No (n = 96) | Yes (n = 109) | |||||||
| Age1 | ||||||||
| 18–35 | 50 (53.2) | 17 (15.9) | 67 (33.3) | 1 | ||||
| 36–50 | 35 (37.2) | 70 (65.4) | 105 (52.2) | 2.19 | 0.418 | < 0.0001 | 8.95 | 3.94–20.31 |
| > 50 | 9 (9.6) | 20 (18.7) | 29 (14.5) | 2.16 | 0.571 | < 0.0001 | 8.65 | 2.83–26.47 |
| Gender | ||||||||
| Male | 46 (47.9) | 61 (56.0) | 107 (52.2) | 1 | ||||
| Female | 50 (52.1) | 48 (44.0) | 98 (47.8) | 0.316 | 0.384 | 0.411 | 1.37 | 0.65–2.91 |
| VSB | ||||||||
| < 10% | 34 (35.8) | 4 (3.7) | 38 (18.6) | 1 | ||||
| ≥ 10% | 61 (64.2) | 105 (96.3) | 166 (81.4) | 3.14 | 0.601 | < 0.0001 | 23.18 | 7.13–75.31 |
| Smoking (≥ 1 cigarette by day)2 | ||||||||
| Yes | 22 (23.7) | 47 (44.8) | 69 (34.8) | 0.90 | 0.400 | 0.025 | 2.46 | 1.12–5.38 |
| No | 71 (76.3) | 58 (55.2) | 129 (65.2) | 1 | ||||
| HIV-1 Infection | ||||||||
| Yes | 37 (38.5) | 37 (33.9) | 74 (36.1) | − 0.24 | 0.392 | 0.542 | 0.79 | 0.37–1.70 |
| No | 59 (61.5) | 72 (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.