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Efficacy of a digitally supported regional systems intervention for suicide prevention (SUPREMOCOL) in Noord-Brabant, the Netherlands
Feltz-Cornelis,Christina M. van der Hofstra,Emma Elfeddali,Iman Bakker,Marjan Metz,Margot de Jong,Jacobus J. van Nieuwenhuizen,Chijs
Feltz-Cornelis,Christina M. van der
Hofstra,Emma
Elfeddali,Iman
Bakker,Marjan
Metz,Margot
de Jong,Jacobus J.
van Nieuwenhuizen,Chijs
Abstract
Objective We evaluated the effect of a digitally supported systems intervention for suicide prevention (SUPREMOCOL) in Noord-Brabant, the Netherlands. Method Non-randomized stepped wedge trial design (SWTD). Stepwise implementation in the five subregions of the systems intervention. Pre-post analysis for the whole province (Exact Rate Ratio Test, Poisson count). SWTD Hazard Ratios of suicides per person-years for subregional analysis of control versus intervention conditions over five times three months. Sensitivity analysis. Results Suicide rates dropped 17.8% (p = .013) from 14.4 suicides per 100,000 before the start of implementation of the systems intervention (2017), to 11.9 (2018) and 11.8 (2019) per 100, during implementation; a significant reduction (p = .043) compared to no changes in the rest of the Netherlands. Suicide rates dropped further by 21.5% (p = .002) to 11.3 suicides per 100,000 during sustained implementation in 2021. Sensitivity analysis confirmed the reduction (p = .02). The SWTD analysis over 15 months in 2018–2019 did not show a significant association of this reduction with implementation per subregional level, probably due to insufficient power given the short SWTD timeframe for implementation and low suicide rates per subregion. Conclusions During the SUPREMOCOL systems intervention, over four years, there was a sustained and significant reduction of suicides in Noord-Brabant.
Description
Funding Information: The Netherlands Organization for Health Research and Development funded this research, grant number 537001002. The Netherlands Organization for Health Research and Development funded an extension of this research for 2021, grant number 5370010021.
Date
2023
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Keywords
Suicide prevention, Systems intervention, Decision aid, Digital mental health, SDG 3 - Good Health and Well-being
Citation
Feltz-Cornelis, C M V D, Hofstra, E, Elfeddali, I, Bakker, M, Metz, M, de Jong, J J & van Nieuwenhuizen, C 2023, 'Efficacy of a digitally supported regional systems intervention for suicide prevention (SUPREMOCOL) in Noord-Brabant, the Netherlands', General Hospital Psychiatry: Psychiatry, Medicine and Primary Care, vol. 84, pp. 73 - 81. https://doi.org/10.1016/j.genhosppsych.2023.06.010