Table 2.
Odds Ratios for Prevalent Rheumatoid Arthritis by Baseline Periodontal and Tooth Loss Status: Cross-Sectional Results from The First National Health and Nutrition Examination Survey and Its Epidemiologic Follow-up Study (n=9,702; 138 RA cases)
| Periodontal Status
| |||||
|---|---|---|---|---|---|
| Healthy Periodontium | Gingivitis | Periodontitis | Edentulous | ||
| Reference *(PI<0.05) | *(PI = 1.36±.03) | *(PI = 4.44±.04) | |||
| RA prevalence (n=57/3436; 1.7%) | RA prevalence (n=33/2202; 1.5%) | RA prevalence (n=27/1754; 1.5%) | RA prevalence (n=21/2310; 0.9%) | ||
| 1. | 1.0 | 1.11(0.59,2.10) | 1.73(0.97,3.11) | 1.01(0.51,2.02) | |
| 2. | 1.0 | 1.15(0.61,2.18) | 2.05(1.06,3.96) | 1.13(0.53,2.41) | |
| 3. | 1.0 | 1.17(0.62, 2.20) | 2.14(1.08,4.23) | 1.11(0.51,2.40) | |
| 4. | 1.0 | 1.09(0.57,2.10) | 1.85(0.95,3.63) | 1.07(0.49,2.23) | |
| 5. | 1.0 | 1.05(0.53,2.09) | 1.94(0.98,3.85) | 1.05(0.49,2.25) | |
|
| |||||
|
Tooth Loss
| |||||
| 0–4 MT | 5–8 MT | 9–14 MT | 15–31 MT | Edentulous | |
| Reference *(PI=0.70±0.04) | *(PI=1.01±0.04) | *(PI=1.77±0.04) | *(PI=2.55±0.04) | ||
| RA prevalence (n=26/2029; 1.3%) | RA prevalence (n=38/1990; 1.9%) | RA prevalence (n=26/1559; 1.7%) | RA prevalence (n=27/1814; 1.5%) | RA prevalence (n=21/2310; 0.9%) | |
| 1. | 1.0 | 1.78(1.09,2.91) | 2.01(0.96,4.21) | 1.50(0.71,3.19) | 1.31(0.56,3.08) |
| 2. | 1.0 | 1.77(1.05,2.99) | 1.95(0.87,4.35) | 1.53(0.65,3.60) | 1.39(0.50,3.82) |
| 3. | 1.0 | 1.51(0.84,2.73) | 1.98(0.87,4.51) | 1.49(0.62,3.56) | 1.28(0.45,3.59) |
| 4. | 1.0 | 1.74(1.03,2.95) | 1.82(0.81,4.10) | 1.45(0.62,3.41) | 1.30(0.48,3.53) |
| 5. | 1.0 | 1.84(1.06,3.17) | 1.78(0.76,4.17) | 1.40(0.56,3.54) | 1.28(0.45,3.64) |
1
unadjusted
2
adjusted for age, sex, race, education, smoking
3
model 2 + pack years of smoking (sample size reduced to 8,598, 132 RA cases)
4
model 2 + body mass index and physical activity level (no activity, moderately active, very active)
5
model 4 + poverty index (sample size reduced to 9,353, 132 RA cases)
*
Mean periodontal index(PI) ±standard error per periodontal status or tooth loss category
MT=missing teeth