Drivers who tested positive for cannabis in oral fluid: a longitudinal analysis of administrative data for Spain between 2011 and 2016.

ABSTRACT:

Objectives

This study aimed to assess the association between positive roadside tests for delta-9-tetrahydrocannabinol (THC) and other driving-impairing substances and THC concentrations and the age and gender of THC-positive drivers.

Design

This study is based on administrative data.

Setting, participants and exposures

National administrative data on drivers who tested positive in confirmation analysis of driving-impairing substances in oral fluid were assessed (2011-2016, 179 645 tests).

Primary and secondary outcome measures

Frequencies of positivity for THC, THC alone and THC plus non-THC substances (stratification by age and gender in 2016) and THC concentration were obtained. Comparisons and univariate and multivariate regression analyses were performed.<

SUBMITTER: Herrera-Gomez F 

PROVIDER: S-EPMC6720329 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature