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To develop and validate Syringe Threat and Injury Correlates (STIC) score to measure police vulnerability to NSI.
Tijuana police officers (N=1,788) received NSI training (2015-2016). STIC score incorporates five self-reported behaviors: syringe confiscation, transportation, breaking, discarding, and arrest for syringe possession. Multivariable logistic regression was used to evaluate the association between STIC score and recent NSI.
Twenty-three (1.5%) officers reported NSI; higher among females than males (3.8% vs. 1.2%; p=0.007). STIC variables had high internal consistency, a distribution of 4.0, a mode of 1.0, a mean (sd) of 2.0 (0.8), and a median (IQR) of 2.0 (1.2-2.6). STIC was associated with recent NSI; odds of NSI being 2.4 times higher for each point increase (p-value<0.0001).
STIC score is a novel tool for assessing NSI risk and prevention program success among police.