Do you have evidence on videoconferencing effectiveness?

Here are two studies: 

• A study of nearly 100,000 mental health patients at the U.S. Department of Veterans Affairs demonstrated an approximately 25% reduction in hospitalization after initiation of video services. 
  (Linda Godleski, M.D.; Adam Darkins, M.D., M.P.H.; John Peters, M.S. Psychiatric Services 2012; doi: 10.1176/appi.ps.201100206)

• Practice-based collaborative care is a complex evidence-based practice that is difficult to implement in smaller primary care practices that lack on-site mental health staff. Telemedicine-based collaborative care virtually co-locates and integrates mental health providers into primary care settings. The objective of this randomized, multisite trial was to compare the outcomes of patients assigned to practice-based and telemedicine-based collaborative care. 
  (John C. Fortney, Ph.D.; Jeffrey M. Pyne, M.D.; Sip B. Mouden, M.S., C.R.C.; Dinesh Mittal, M.D.; Teresa J. Hudson, Pharm.D.; Gary W. Schroeder, Ph.D.; David K. Williams, Ph.D.; Carol A. Bynum, Ph.D.; Rhonda Mattox, M.D.; Kathryn M. Rost, Ph.D. Am J Psychiatry 2013;:. 10.1176/appi.ajp.2012.12050696)