title: Mental Vitality @ Work: The effectiveness of a mental module for workers' health surveillance for nurses and allied health professionals, comparing two approaches in a cluster-randomised controlled trial.
abstract: OBJECTIVE
  The aim of this study was to compare two approaches for a worker's health surveillance (WHS) mental module on work functioning and work-related mental health.
  
  
  METHODS
  Nurses and allied health professionals from one organisation were cluster-randomised at ward level to e-mental health care (EMH) (N = 579) or occupational physician care (OP) (N = 591). Both groups received screening and personalised feedback on impaired work functioning and mental health. Positively screened participants received an invitation to follow a self-help EMH intervention, or for a consultation with an OP. The primary outcome was impaired work functioning. Follow-up was performed after 3 and 6 months. Linear mixed models were applied to determine differences. Non-inferiority of the EMH-care approach was demonstrated if the mean absolute improvement on work functioning in the OP-care group was ≤10 points higher than the EMH-care group.
  
  
  RESULTS
  Analyses were performed on the positively screened participants (almost 80 %) (EMH N = 75; OP N = 108) and all participants (EMH N = 98; OP N = 142). Both groups improved over time regarding impaired work functioning. A considerable percentage of participants had improved relevantly at follow-up regarding work functioning (3 months: EMH 30 %, OP 46 %; 6 months: EMH 36 %, OP 41 %) compared to baseline. No statistically significant differences were found between the groups, and the difference did not exceed the pre-defined criterion for non-inferiority.
  
  
  CONCLUSIONS
  The OP-care approach for a WHS mental module trended towards better performance in targeting work functioning, but our findings indicate that the EMH-care approach was non-inferior. However, the high dropout rate and low compliance to EMH interventions should be taken into account.
authors.affiliation: Coronel Institute of Occupational Health, Academic Medical Center, University of Amsterdam, P.O. Box 22700, 1100 DE, Amsterdam, The Netherlands, S.M.Ketelaar@amc.uva.nl.
authors.forename: Sarah M
authors.initials: SM
authors.lastname: Ketelaar
authors.forename: Karen
authors.initials: K
authors.lastname: Nieuwenhuijsen
authors.forename: Fania R
authors.initials: FR
authors.lastname: Gärtner
authors.forename: Linda
authors.initials: L
authors.lastname: Bolier
authors.forename: Odile
authors.initials: O
authors.lastname: Smeets
authors.forename: Judith K
authors.initials: JK
authors.lastname: Sluiter
mesh_terms: D000328:Adult; D000488:Allied Health Personnel / Q000523:psychology; D005260:Female; D015438:Health Behavior; D006801:Humans; D020407:Internet; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D009726:Nurses / Q000523:psychology*; D016272:Occupational Health; D009787:Occupational Medicine / Q000379:methods*; D012107:Research Design; D012648:Self Care / Q000379:methods*; D018571:Sentinel Surveillance; D011795:Surveys and Questionnaires
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