TABLE 2.

Adjusted^* relative risk and 95% confidence interval for losing ≥two and ≥three teeth during 5-year period and 10% of sites with 3+mm attachment loss increase (n = 363) during 3-year period for PDS population stratified by PPC and CDC/AAP classification

Class	Description	Tooth loss ≥2 Teeth during 5 years	Tooth loss ≥ Three teeth during 5 years	Attachment loss 10% of sites with ≥3 mm AL increase
PPC
PPC-A	Health	Ref	Ref	Ref
PPC-B	Mild Disease	2.92(1.34–6.38)	3.21 (1.06–9.77)	1.13 (0.20–6.39)
PPC-C	High GI Scores	2.68 (1.38–5.19)	3.50 (1.40–8.74)	2.17 (0.86–5.49)
PPC-D	Tooth Loss	3.45 (1.80–6.63)	4.45 (1.79–11.1)	4.22(1.76–10.1)
PPC-E	Posterior Disease	3.74(1.43–9.79)	3.68 (0.84–16.2)	2.56 (0.23–28.3)
PPC-F	Severe Tooth Loss	3.23 (1.66–6.28)	4.20 (1.68–10.5)	3.06 (1.17–8.01)
PPC-G	Severe Disease	3.63 (1.78–7.41)	5.51 (2.11–14.4)	5.71 (2.22–14.7)
CDC/AAP
CDC/AAP	Health	Ref	Ref	Ref
CDC/AAP	Mild	0.74 (0.45–1.20)	0.66 (0.31–1.39)	0.71 (0.27–1.91)
CDC/AAP	Moderate	1.09 (0.76–1.56)	1.05 (0.60–1.82)	1.41 (0.69–2.87)
CDC/AAP	Severe	1.72(1.20–2.47)	2.30 (1.34–3.96)	3.88 (1.93–7.84)

The estimates were weighted for study design.

PDS, Piedmont Dental Study; PPC, periodontal profile class; CDC/AAP, Center for Disease Control/American Academy of Periodontology; GI, gingival inflammation.

^*Adjusted for race, sex, age, diabetes, and smoking.