Crude and adjusted odds ratios (OR) for P gingivalis IgG and memory tests. Serial subtraction (impaired <5/5 possible points)
| P gingivalis IgG (EU) | Models for calculation/attention OR (95% CI) | |||
| Crude | Model 1 | Model 2 | Model 3 | |
| (⩽57) [reference] | 1 | 1 | 1 | 1 |
| (58–65) | 1.49 (0.86–2.59) | 1.54 (0.86–2.76) | 1.48 (0.69–3.18) | 1.57 (0.74–3.31) |
| (66–119) | 1.42 (0.97–2.08) | 1.37 (0.94–1.98) | 1.34 (0.77–2.34) | 1.36 (0.80–2.29) |
| (>119) | 1.95 (1.22–3.11) | 2.02 (1.31–3.10) | 1.98 (1.14–3.42) | 2.00 (1.19–3.36) |
| p Trend | 0.04 | 0.01 | 0.06 | 0.0498 |
Crude, association of P gingivalis IgG and cognitive test; Model 1, additionally adjusted for age, sex and education; Model 2, additionally adjusted for race, insurance and income; Model 3, additionally adjusted for history of diabetes mellitus, hypertension, smoking, congestive heart failure, coronary artery disease, stroke and C reactive protein.