Table 1 Posterior means and 95% credible intervals for model parameters in Model 1

Intercept

a₀₀₀

6.24

0.54

5.18

7.29

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

β₁

2.67

0.69

1.36

4.04

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

β₂

1.98

0.69

0.64

3.34

18 months effect (ref: 6 months)

β₃

−2.26

0.28

−2.8

−1.72

24 months effect (ref: 6 months)

β₄

−3.05

0.28

−3.6

− 2.52

In-clinic group effect * 18 months effect

β₅

0.06

0.61

−1.15

1.26

Phone-based group effect *18 months effect

β₆

−2.16

0.79

−3.7

− 0.62

In-clinic group effect * 24 months effect

β₇

−0.41

0.38

−1.16

0.34

Phone-based group effect * 24 months effect

β₈

−0.1

0.4

−0.87

0.68

Affiliation: Marshfield Clinic (ref: KUMC)

β₉

−0.83

0.39

−1.58

−0.07

Affiliation: UNMC (ref: KUMC)

β₁₀

−0.51

0.39

−1.28

0.28

Observation level variation

σ

3.92

0.06

3.8

4.03

Site level variation

σ_η

0.98

0.36

0.22

1.67

Patient level variation

σ_r

6.66

0.15

6.38

6.95