Machine learning prediction of blood alcohol concentration: a digital signature of smart-breathalyzer behavior.

ABSTRACT: Excess alcohol use is an important determinant of death and disability. Machine learning (ML)-driven interventions leveraging smart-breathalyzer data may help reduce these harms. We developed a digital phenotype of long-term smart-breathalyzer behavior to predict individuals' breath alcohol concentration (BrAC) levels trained on data from a smart breathalyzer. We analyzed roughly one million datapoints from 33,452 users of a commercial smart-breathalyzer device, collected between 2013 and 2017. For validation, we analyzed the associations between state-level observed smart-breathalyzer BrAC levels and impaired-driving motor vehicle death rates. Behavioral, geolocation-based, and time-series-derived features were fed to an ML algorithm using training (70% of the cohort), development (10% of

SUBMITTER: Aschbacher K 

PROVIDER: S-EPMC8058037 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature