The conclusion is that the amount of nicotine in e-cigarettes is higher than the nicotine in cigarettes.
Each cigarette usually contains 10-12 milligrams of nicotine, but the actual inhalation is about 1-2 milligrams. For a vape, it can contain from 0-36 mg of nicotine or even more.
Compared to cigarettes, vapes allow for better control of nicotine intake.