FORENSIC TOXICOLOGY

Small group prevalence differences cannot identify which individual used a medicine nonmedically.

What the supplied paper reports

Repeated Spanish school-survey data examined nonmedical benzodiazepine use among immigrant and native-born adolescents during 2006–2016. Patterns were broadly similar, and other substance use, perceived availability and risk perceptions were associated with reported use.

Study limits

Survey self-report, school participation and repeated cross-sectional sampling limit causal interpretation. Group-level associations do not explain each adolescent’s behavior or establish a biological effect of migration status.

Forensic implications

Specify the dates and population rather than applying a historical percentage to a current individual. Forensic opinions should rely on confirmed exposure and behavior. Demographic membership cannot substitute for evidence of use, impairment, dependence or intent.

Source and related reading

Source: PMC7908632, supplied full-text paper. Findings are paraphrased; forensic implications are an interpretation.

Related: COPD Hypnotic-Use Odds Ratios Do Not Define an Individual Respiratory Probability.