Fig. 2.
Histogram of point estimates (i.e. posterior means) of the treatment effects
and smooth posterior estimates 
of the treatment effect
distribution. The histogram is constructed using all point estimates from both the
SOLVD treatment and prevention trials. Smooth estimates, 
, of the distribution of
treatment effects were computed as described in equation (3.5) for the two trials
separately. The kernel bandwidth 
for each trial was chosen using
the rule 
,
where 
and
are posterior means of
the standard deviation and inter-quartile range of 
respectively and
where 
is the trial-specific sample
size.