Stephen J.LurieMD, PhD, Senior EditorIndividualAuthor
Copyright 2002 American Medical Association. All Rights Reserved.
Applicable FARS/DFARS Restrictions Apply to Government Use.2002
To the Editor: While the study of Dr Solowij
and colleagues1 demonstrates a significant
difference in cognitive function between long-term users and short-term/nonusers
of marijuana, I am concerned about possible selection biases. Because all
the marijuana users in this trial were actively seeking assistance with reduction
or cessation, the sample may be biased toward those individuals who feel they
have a substance use problem so severe it requires treatment.
Watson M. Does Marijuana Use Cause Long-term Cognitive Deficits?. JAMA. 2002;287(20):2652-2654. doi:10.1001/jama.287.20.2652