Pippa Hawley is the Head of the Division of Palliative Care at the University of British Columbia
The recent headlines about legalization of cannabis in Canada - a subject already fraught with bias - has illustrated the need for care when reporting on statistical observations. An example of things going badly wrong is a recent Vancouver Sun column headline “Fatal car crashes triple among drivers high on marijuana after legalization in Colorado; double in Washington state”. This was based on an article in the October issue of the BCMJ. The headline would seem to indicate that there has been a dramatic increase in fatal car crashes in those two states caused by people driving high on newly-legal cannabis.
This would be very important information and a pretty persuasive argument against legalization of cannabis, if it were true. ...continue reading