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Kaplan-Meier curve by tetrahydrocannabinol (THC) dose for patients with survival time ≥7 days. Patients with survival time ≥7 days: log rank (Mantel-Cox) p < 0.001, test of equality of survival distributions for the different levels of THC doses: no THC/≤4.7 mg per day/>4.7 mg per day.
