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. Author manuscript; available in PMC: 2019 Sep 11.
Published in final edited form as: Biometrics. 2019 Jan 22;75(3):917–926. doi: 10.1111/biom.13027

Table 1. Posterior mean and 95% credible intervals of the model parameters in the SPM and the LMM fitted to the HERS data.

  SPM   LMM
  Longitudinal   Dropout   Longitudinal
Mean 2.5% 97.5% Mean 2.5% 97.5% Mean 2.5% 97.5%
Intercept −0.55 −0.75 −0.36 1.11 0.91 1.32 −0.57 −0.75 −0.38
Baseline HIV viral load
    0–500 1.52 1.32 1.74 0.75 0.54 0.97 1.54 1.33 1.74
    500–5k 1.02 0.82 1.22 0.63 0.44 0.83 1.03 0.83 1.21
    5k–30k 0.47 0.26 0.70 0.26 0.05 0.47 0.48 0.26 0.69
    30k+ (reference)
Baseline HIV symptoms −0.02 −0.07 0.03 −0.01 −0.06 0.05 −0.03 −0.08 0.03
ART at baseline −0.65 −0.77 −0.53 −0.22 −0.40 −0.04 −0.66 −0.77 −0.55
(j − 1)* 1.67 1.09 2.28
{(j − 1)*}2 −2.79 −3.41 −2.16
(j − 1)**ART at baseline 0.37 0.04 0.70
Time (visit) −1.21 −1.59 −0.84 −0.91 −1.29 −0.54
Time*baseline viral load
   0–500 0.59 0.21 1.00 0.37 −0.03 0.78
   500–5k 0.53 0.15 0.91 0.35 −0.03 0.74
   5k–30k 0.37 −0.06 0.79 0.25 −0.16 0.67
   30k+ (reference)
Time*baseline HIV symptoms −0.06 −0.15 0.04 −0.04 −0.14 0.05
Time*ART at baseline 0.21 0.01 0.40 0.25 0.06 0.43
corr(bi1, bi2) −0.20 −0.29 −0.13 −0.23 −0.31 −0.14
var(bi1) 0.56 0.50 0.62 0.56 0.50 0.62
var(bi2) 1.24 1.07 1.44 1.12 0.97 1.29
σϵ2 0.15 0.14 0.16 0.15 0.14 0.16
γ1 0.23 0.15 0.30
γ2 0.28 0.22 0.35