EPP392
Onset and Persistence of NSSI Patterns and risk of Suicide Reattempt: Results from the SURVIVE Study
M. Arqueros 1, E. Suarez-Soto 1, M. Diaz-Marsa 2, A. De La Torre-Luque 1,*, A. Cebria 3, M. Elices 4, M.-A. Boti 5, P. Lopez-Peña 6, A. Palao-Terrero 7, M. Ruiz-Veguilla 8, A. Garcia-Fernandez 9, T. SURVIVE Consortium 4, V. Perez-Sola 4
1Complutense University of Madrid, 2San Carlos Clinic Hospital, Madrid, 3Parc Tauli Hospital, Sabadell, 4Mar University Hospital, 5Clinic Hospital, Barcelona, 6Araba Vitoria University Hospital, Vitoria, 7La Paz University Hospital, Madrid, 8Virgen del Rocio University Hospital, Seville, 9University of Oviedo, Oviedo, Spain
Introduction: After a suicide attempt, reattempt risk is concentrated in the first year, yet how post-attempt non-suicidal self-injury (NSSI) patterns relate to the timing of reattempts remains unclear. Hazard-based models can quantify this association.
Objectives: To evaluate whether NSSI pattern membership predicts time to suicide reattempt over 12 months in a multivariable Cox model.
Methods: Adults with a recent suicide attempt (n=685) were assessed ≤15 days post-attempt and followed for 12 months. NSSI pattern (reference=NN: No→No) was coded as Onset (No→Yes), Remission (Yes→No), or Persistence (Yes→Yes). The initial covariates were age, sex, number of prior attempts, BIS-11 subscales, ACSS-FAD, MINI diagnoses (count), BSI-GSI, reasons for ideation, and NSSI pattern. Backward elimination by Akaike’s Information Criterion (AIC) yielded the final model. We report hazard ratios (HR) with 95% CIs.
Results: The final Cox model (Figure 1) retained age, number of prior attempts, reasons for ideation (reference=External), and NSSI pattern (AIC=833.7; χ²(7)=22.26, p<.002; concordance=.632). Older age was associated with lower hazard (HR=0.98, 95% CI [0.96, 0.99]); more prior attempts with higher hazard (HR=1.02, 95% CI [1.01, 1.04]). Relative to NN, Remission (HR=0.56, 95% CI [0.32, 0.96]) and Persistence (HR=0.58, 95% CI [0.35, 0.96]) were associated with reduced 12-month hazard; Onset did not differ significantly.
Image 1:
Conclusions: After a suicide attempt, NSSI pattern membership provides prognostic information beyond age and attempt history. Compared with NN, Remission and Persistence were linked to lower 12-month reattempt hazard, whereas Onset was not. Tracking NSSI patterns may refine post-discharge risk stratification and follow-up planning.
Disclosure of Interest: None Declared