Table 7 Multivariate analysis (negative binomial regression) of the number of extracted teeth during SPT.

From: Evaluation of periodontitis-related tooth loss according to the new 2018 classification of periodontitis

Independent variable

IRR (95%CI)

p-value

Sex

Female

Reference

 

Male

0.68 (0.04–1.36)

0.36

Age

1.02 (0.00–2.04)

0.27

Number of teeth at T0

0.44 (0.02–1.10)

0.18

Number of teeth lost during APT

1.18 (0.55–3.15)

0.28

Stage

I, II, & III

Reference

 

IV

1.78 (1.23–2.69)

 < 0.01

Grade

A & B

Reference

 

C

2.72 (2.10–3.42)

 < 0.01

Extent

Localized

Reference

 

Generalized

1.43 (1.20–1.82)

 < 0.01

  1. Multivariate analysis (negative binomial regression) of the number of extracted teeth due to periodontitis per patient during SPT; analysis was corrected for the period of follow-up.
  2. APT active periodontal therapy; SPT supportive periodontal therapy; IRR incidence rate ratio; CI confidence interval; T0 start of APT.
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