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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: J Appl Stat. 2015 Mar 18;42(10):2203–2219. doi: 10.1080/02664763.2015.1023270

Table 6.

WGEE estimates of parameters, standard errors, and p-values for the ZIB-like model under MAR and MMDP for the COMBINE Study

Treatment period only Whole study period
Parameters Estimate SE p-value Estimate SE p-value
Strucural zero part (ρit)
βu0 −0.784 0.273 0.004 −0.701 0.259 0.007
βu1 (MM vs CBI only) 0.383 0.169 0.024 0.274 0.154 0.075
βu2 (Combined vs CBI only) 0.427 0.169 0.012 0.345 0.155 0.026
βu3 (baseline DAD) −0.006 0.007 0.327 −0.010 0.006 0.124
Binomial part (pit)
βυ0 −1.322 0.208 < 0.0001 −1.264 0.183 < 0.0001
βυ1 (MM vs CBI only) −0.358 0.122 0.003 −0.252 0.106 0.018
βυ2 (Combined vs CBI only) −0.480 0.122 < 0.0001 −0.347 0.107 0.001
βυ3 (baseline DAD) 0.059 0.006 < 0.0001 0.060 0.005 < 0.0001

Results of WGEE based on ZIB-like model for COMBINE Study p-value for H0 : β = 0