Table 2. Association between skull BMD with periodontitis in different models.
| Skull BMD, g/cm2 | OR (95%CI), P-value | ||
|---|---|---|---|
| Crude model | Model Ⅰ | Model Ⅱ | |
| Per 1g/cm2 increase | 0.65 (0.54, 0.77) <0.0001 | 0.76 (0.62, 0.93) 0.0078 | 0.73 (0.59, 0.90) 0.0032 |
| Skull BMD, (quartile) | |||
| Q1(1.22–1.98) | Ref | Ref | Ref |
| Q2(1.98–2.21) | 0.86 (0.71, 1.03) 0.0939 | 0.94 (0.77, 1.15) 0.5658 | 0.95 (0.78, 1.16) 0.6269 |
| Q3(2.21–2.47) | 0.70 (0.58, 0.84) 0.0001 | 0.81 (0.66, 0.99) 0.0414 | 0.78 (0.64, 0.97) 0.0228 |
| Q4(2.47–3.79) | 0.64 (0.53, 0.77) <0.0001 | 0.72 (0.58, 0.89) 0.0028 | 0.70 (0.56, 0.87) 0.0014 |
| P for trend | 0.86 (0.81, 0.91) <0.0001 | 0.89 (0.83, 0.96) 0.0012 | 0.88 (0.82, 0.95) 0.0004 |
Abbreviations: BMD, bone mineral density. CI, confidence interval. OR, odds ratio.
Crude model adjust for: None.
Model Ⅰ adjust for: sex; age(smooth); race; education level; PIR.
Model Ⅱ adjust for: sex; age(smooth); race; education level; PIR; BMI; handgrip strength; smoke consumption; alcohol consumption; hypertension; hypertriglyceridemia; diabetes; general health condition; depressive symptoms; hours of sleep; frequency of interdental hygiene (last 7 days).
#Periodontitis contained mild, moderate, and severe periodontitis.