[Наталья П.]

[Ссылки доступны только зарегистрированным пользователям ]

Allocation bias


Which, if any, of the following methods is unlikely to introduce bias in the allocation of people to treatments in a trial?


a) People are matched according to age and sex, and for each person allocated to one treatment, a matching person is allocated to the other

b) The clinician treating the person tosses a coin to decide which treatment to give

c) People whose initial letter of their last name is in the first half of the alphabet receive one treatment; those in the second half of the alphabet receive the other

d) People with an even date of birth receive one treatment, those with an odd date of birth receive the other