Although the data in models appear to be missing at random,
possible biases in estimates of effects could still exist.
In addition, the size of the sample is small for some of the logistic regression models.
A larger sample size might have allowed detection of other relevant main effects or interactions.
Finally, much of the information and the diagnostic assessment were based on the report of defendants who were interviewed immediately after arrest in a pretrial evaluation,
and these reports may have been biased by perceived self-interest.
A structured prospective study of these and other factors might produce a different picture.