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• W2989003622 abstract "Objective Suicide prevention is a major priority in Native American communities. We used machine learning with community‐based suicide surveillance data to better identify those most at risk. Method This study leverages data from the Celebrating Life program operated by the White Mountain Apache Tribe in Arizona and in partnership with Johns Hopkins University. We examined N = 2,390 individuals with a validated suicide‐related event between 2006 and 2017. Predictors included 73 variables (e.g., demographics, educational history, past mental health, and substance use). The outcome was suicide attempt 6, 12, and 24 months after an initial event. We tested four algorithmic approaches using cross‐validation. Results Area under the curves ranged from AUC = 0.81 (95% CI ± 0.08) for the decision tree classifiers to AUC = 0.87 (95% CI ± 0.04) for the ridge regression, results that were considerably higher than a past suicide attempt (AUC = 0.57; 95% CI ± 0.08). Selecting a cutoff value based on risk concentration plots yielded 0.88 sensitivity, 0.72 specificity, and a positive predictive value of 0.12 for detecting an attempt 24 months postindex event. Conclusion These models substantially improved our ability to determine who was most at risk in this community. Further work is needed including developing clinical guidance and external validation." @default.
• W2989003622 created "2019-11-22" @default.
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• W2989003622 date "2019-11-06" @default.
• W2989003622 modified "2023-09-27" @default.
• W2989003622 title "Reaching Those at Highest Risk for Suicide: Development of a Model Using Machine Learning Methods for use With Native American Communities" @default.
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• W2989003622 doi "https://doi.org/10.1111/sltb.12598" @default.
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