Table 2 Posterior mean and 95% credible interval for model parameters in Model 2

Intercept

a₀₀₀

6.25

0.53

5.2

7.28

In-clinic group effect (ref: in-clinic indiv)

β₁

2.67

0.7

1.31

4.05

Phone-based group effect (ref: in-clinic indiv)

β₂

1.94

0.7

0.53

3.34

18 months effect (ref: 15 months)

β₃

−2.26

0.28

−2.8

− 1.71

24 months effect (ref: 15 months)

β₄

−3.06

0.28

−3.61

− 2.51

In-clinic group effect * 18 months effect

β₅

0.09

0.62

−1.12

1.32

Phone-based group effect * 18 months effect

β₆

−2.13

0.81

−3.73

−0.55

In-clinic group effect * 24 months effect

β₇

−0.41

0.39

−1.19

0.35

Phone-based group effect * 24 months effect

β₈

−0.1

0.39

−0.88

0.66

Affiliation: Marshfield Clinic (ref: KUMC)

β₉

−0.83

0.39

−1.59

−0.06

Affiliation: UNMC (ref: KUMC)

β₁₀

−0.51

0.39

−1.27

0.26

Observation level variation

σ

3.92

0.06

3.81

4.03

Site level variation

σ_η

0.94

0.37

0.15

1.66

Group level variation

σ_ϑ

1.28

0.44

0.28

2.08

Patient level variation

σ_r

6.59

0.15

6.29

6.89