Methods: This health–economic evaluation alongside a randomized controlled trial included 155 patients with a psychotic disorder in care as usual (CAU), with comorbid PTSD. Participants received eye movement desensitization and reprocessing (EMDR) (n = 55), prolonged exposure (PE) (n = 53) or waiting list (WL) (n = 47) with masked assessments at baseline (T0) and at the two-month (post-treatment, T2) and six-month follow-up (T6). Costs were calculated using the TiC-P interview for assessing healthcare consumption and productivity losses. Incremental cost-effectiveness ratios and economic acceptability were calculated for quality-adjusted life years (EQ-5D-3L-based QALYs) and PTSD ‘Loss of diagnosis’ (LoD, CAPS).
Results: Compared to WL, costs were lower in EMDR (-€1410) and PE (-€501) per patient per six months. In addition, EMDR (robust SE 0.024, t = 2.14, p = .035) and PE (robust SE 0.024, t = 2.14, p = .035) yielded a 0.052 and 0.051 incremental QALY gain, respectively, as well as 26% greater probability for LoD following EMDR (robust SE = 0.096, z = 2.66, p = .008) and 22% following PE (robust SE 0.098, z = 2.28, p = .023). Acceptability curves indicate high probabilities of PTSD treatments being the better economic choice. Sensitivity analyses corroborated these outcomes.
Conclusion: Adding PTSD treatment to CAU for individuals with psychosis and PTSD seem to yield better health and less PTSD at lower costs, which argues for implementation.
- KEA CUA Cost-effectiveness psychosis TTIP psychotic disorder QALY quality-adjusted life years PTSD EMDR prolonged exposure
VU Research Profile
- Human Health and Life Sciences
Bont, P. A. J. M. D. (Contributor), Vleugel, B. M. V. D. (Contributor), Berg, D. P. G. V. D. (Contributor), Roos, C. D. (Contributor), Lokkerbol, J. (Contributor), Smit, F. (Contributor), Jongh, A. D. (Contributor), Gaag, M. V. D. (Contributor) & Minnen, A. V. (Contributor), Unknown Publisher, 1 Jan 2019