title: Impact of patient involvement in mental health research: longitudinal study.
abstract: BACKGROUND
  It is deemed good practice to involve patients routinely in research but no study has investigated the practical benefits, particularly to successful recruitment.
  
  
  OBJECTIVE
  To identify whether patient involvement is associated with study success.
  
  
  METHODS
  All studies listed on the Mental Health Research Network (MHRN) portfolio database (n = 374) were interrogated using logistic regression, ANOVA and Pearson's correlation to identify associations with study characteristics, funding bodies and recruitment success.
  
  
  RESULTS
  Patient involvement increased over time although in some areas of research it was limited. Some funders, especially the National Institute for Health Research (NIHR), had more associated patient involvement than others. Studies that involved patients to a greater extent were more likely to have achieved recruitment targets (χ(2) = 4.58, P<0.05), defined as reaching at least 90% of the target.
  
  
  CONCLUSIONS
  This is the first time associations with study success have been identified for patient involvement. Researchers might now consider ways to involve patients more comprehensively as this is associated with study success. Further research is needed to explore this finding.
authors.affiliation: Liam Ennis, BSc, Health Services and Population Research Department, Institute of Psychiatry, London; Til Wykes, PhD, Psychology Department, Institute of Psychiatry, London, UK.
authors.forename: Liam
authors.initials: L
authors.lastname: Ennis
authors.forename: Til
authors.initials: T
authors.lastname: Wykes
mesh_terms: D000047:Academies and Institutes; D000704:Analysis of Variance; D006302:Health Services Research / Q000379:methods / Q000639:trends*; D006801:Humans; D016015:Logistic Models; D008137:Longitudinal Studies; D001523:Mental Disorders; D010358:Patient Participation / Q000639:trends*; D018579:Patient Selection; D012109:Research Support as Topic; D013222:State Medicine; D006113:United Kingdom