Table 2.

Comparison of fit andcomplexity between the 2adjustment models and thestandard NMA model, allapplied to published data

	Regression model	Selection model	NMA model
Mean posterior residual deviance (${\overline{D}}_{\mathit{res}}$)	31.4	31.5	34.4
Effective number of parameters (pD)	15.9	14.7	13.9
Deviance Information Criterion (DIC)	47.3	46.2	48.3

Lower values of ${\overline{D}}_{\mathit{res}}$ indicate a better fit to the data. Lower values of the DIC indicate a better compromise between model fit and model complexity. A difference in DICs of 5 or more can be considered substantial (http://www.mrc-bsu.cam.ac.uk/bugs/winbugs/dicpage.shtml).