Only 9% of people in the other countries reported the same pot use.
There have been more than 1,500 overdose deaths in Vancouver since a provincial overdose emergency was declared four years ago.
“Canadians should be seized with this particular crisis,” Dr. Theresa Tam said last month.
The judge dismissed her argument, calling the search of her purse "reasonable."
More than 5,000 people have fatally overdosed in B.C. since the province declared a public health emergency in 2016.
B.C.'s provincial health officer called for decriminalization of small drug possessions in 2019.
Relations between Ottawa and Beijing have soured since late 2018.
They are the first known patients in Canada to be allowed to use psychedelics for medical treatment.
Canada is planning on changing how the Patented Medicine Prices Review Board decides prices for drugs in Canada.
Fentanyl and other very potent synthetic opioids continue to be a major cause of hospitalizations and deaths.