OBJECTIVE
To study the impact of the number of choices and age on measures of performance in choosing a Medicare prescription drug plan.
DATA SOURCE/STUDY SETTING
One hundred ninty-two healthy individuals age 18 and older, half age 65 or older, in Claremont, California.
STUDY DESIGN
Participants were randomly assigned to 3, 10, or 20 hypothetical drug plans and asked four factual questions....
