Does "than currently prevails" refer to "than the model that prevails currently"?

Context:

Several psychological and biological mechanisms by which childhood trauma increases risk for psychosis merit attention. Integration of these different levels of analysis may stimulate a more genuinely integrated bio-psycho-social model of psychosis than currently prevails. Clinical implications include the need for staff training in asking about abuse and the need to offer appropriate psychosocial treatments to patients who have been abused or neglected as children. Prevention issues are also identified.

More:

http://www.ncbi.nlm.nih.gov/pubmed/16223421?dopt=Abstract