Alcoholics Anonymous (AA), a Voluntary Sobriety Program, Compared AA Members

Multiple Choice

Alcoholics Anonymous (AA) , a voluntary sobriety program, compared AA members to similar non-members based on age, gender, marital status, and number of drinks per week, producing a predicted probability of joining AA .What type of design is this?

A) Control variables implemented through multiple regression
B) Qualitative research
C) Lab experiment
D) Propensity score matching