About 25 percent of cancer patients use marijuana.
At least that appears to be the case in Washington, a state with legalized marijuana.
Washington legalized medical marijuana in 1998 and recreational marijuana in 2012. It’s been commercially available there since 2014.
With more than half of U.S. states now allowing medical marijuana, researchers wanted to determine how many cancer patients take advantage of the availability.
For the study, Dr. Steven Pergam of the Fred Hutchinson Cancer Research Center and his colleagues surveyed patients at the Seattle Cancer Center Alliance.
Of 2,737 eligible patients, 926 completed the anonymous survey.
Study authors acknowledge there might be some sampling bias due to the small response. They noted that it’s possible that current use patterns may be overrepresented or underrepresented.
Of those who responded, the median age was 58.
About 66 percent said they had previously used marijuana. About 24 percent used it in the past year and