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Table 4 Posterior means and correspondence p-values for parameter estimation with inclusion and exclusion of patient specific variance

From: Determinants of CD4 cell count change and time-to default from HAART; a comparison of separate and joint models

Effect Model (2): With homogeneity of variance for patients Model (5): With patient specific variance/heterogeneity
Posterior estimate p-value Posterior estimate p-value
Intercept 4.350 0.004 4.130 0.002
Age −0.006 0.003 − 0.036 0.005
Weight 0.001 0.082 0.001 0.082
Baseline CD4 0.005 0.008 0.002 0.008
Area (Reference = Urban)
 Rural −0.002 0.064 −0.003 0.003
Marital Status (Reference = without partner)
 With partner 0.007 0.003 0.005 0.003
Sex (Reference = male)     
 Female 0.034 0.004 0.023 0.003
Level of education (Reference = Tertiary)
 No educationl 0.001 0.076 0.001 0.076
 Primary education 0.017 0.044 0.017 0.034
 Secondary education 0.020 0.028 0.010 0.038
Level of Income (Reference = High income)
 Low income −0.010 0.074 −0.020 0.064
 Middle income −0.006 0.062 −0.016 0.052
Owner of Cell phone (Reference = With phone)
 Without cell phone −0.001 0.004 −0.001 0.004
Level of adherence (Reference = Good adherence)
 Poor adhere −0.523 0.004 −0.483 0.002
 Fair adhere −0.452 0.001 −0.552 0.002
Level of disclosure the disease (Reference = yes)
 No - 0.00195 0.0031 −0.1020 0.0031
WHO stages (Reference = Stage IV)
 Stage I 0.1511 0.0021 0.2511 0.0021
 Stage II 0.1567 0.0321 0.1567 0.0321
 Stage III 0.1381 0.2311 0.4381 0.0311
 Time 0.0210 0.0013 0.1210 0.0213
 Var (νi0) 0.8820   0.8620  
 Var (νi1) 0.0210   0.0110  
 Cov (νi0, νi1) - 0.0542   - 0.0642  
 Corr (νi0, νi1) −0.8214   −0.7314  
 DIC 234,763 212,393
  1. νi0 is the random of patient i effect and  νi1 is the random fraility term