Multivariable relative risk* of RA by joint exposure (history of periodontal surgery and/or teeth lost) among women in the Nurses’ Health Study, 1992–2004 (n = 81,132).
| Periodontal Disease | ||
|---|---|---|
| No | Yes | |
| Tooth Loss | ||
| No | 1.0 (ref) | 1.34 (0.83, 2.14) |
| Yes | 1.09 (0.77, 1.53) | 1.27 (0.65, 2.49) |
↵* Multivariable RR and 95% CI adjusted for number of natural teeth, alcohol intake, pack-years of smoking, body mass index, father’s occupation, age at menarche, postmenopausal status and hormone use, parity and duration of breastfeeding, and regularity of menses.