Table 1 Estimated recurrence rates (per year) and the change points (in years) for the study jaw and the non-study jaw, based on a tripartite Poisson process according to Eq. 9

Study jaw

λ₁, treatment 1

0.0284

−0.0586

0.06734

λ₁, treatment 2

0.0497

0.0152

0.23034

λ₂, treatment 1

0.1290

0.1167

0.1413

λ₂, treatment 2

0.0709

0.0576

0.0855

λ₃, treatment 1

1.3770

1.2665

1.5099

λ₃, treatment 2

1.6490

1.4487

1.8816

t₁

1.7350

−1.6202

2.7703

t₂

7.9532

7.8942

8.0179

Non-study jaw

λ₁, treatment 1

0.0717

0.0589

0.0837

λ₁, treatment 2

0.0665

0.0508

0.0788

λ₂, treatment 1

0.2516

0.2324

0.2712

λ₂, treatment 2

0.1654

0.1438

0.1874

λ₃, treatment 1

4.2861

3.4070

5.1868

λ₃, treatment 2

9.9602

7.6880

12.6717

t₁

4.0901

3.5693

4.4598

t₂

8.4751

8.3927

8.5269