Table 3.

${\mathit{ESS}}_2({\stackrel{\sim }{\sigma }}_{\zeta }^2\mid m_{\phi },s_{\phi }^2)$ values computed for several sets of (m_φ, $s_{\phi }^2$), where ${\stackrel{\sim }{\sigma }}_{\zeta }^2$ represents the inter-center heterogeneity of the treatment effect, and m_φ and $s_{\phi }^2$ respectively denote the mean and variance parameters of the lognormal hyperprior of σ̃_ζ.

mφ	$s_{\phi }^2$	ESS2
−1.61	0.52	27.6
−1.61	0.752	12.1
−1.61	1.02	8.4
−1.61	1.252	6.6
−0.5	0.52	15.5
−0.5	0.752	8.0
−0.5	1.02	5.7
−0.5	1.252	2.1
0.0	0.52	9.1
0.0	0.752	5.0
0.0	1.02	1.4
0.0	1.252	0.4