Family preference for role in decision making is assessed using a scale modeled on an instrument developed by Degner et al. We make family/patient dimension from modifying Degner and Sloan's second Control Preference Scale set, family/physician dimension. The options of modified set of five cards (family/patient dimension) range from the family making the decision mainly, through a collaborative model where the family and patient jointly decided, to a scenario where the patient made decision mainly. Family is asked to indicate whether they preferred an independent role (i.e., "that the family makes the final decision regarding which treatment the patient will receive or after considering patient's opinion"), shared role (i.e., "that the family and patient together select which treatment is best for the patient"), or a dependent role (i.e., "that the patient alone makes all the decisions regarding the patient's treatment or considers the family's opinion"). Family participant chose the decision-role statement that best described his/her preferred role in decision making. The Control Preference Scale (CPS) is translated into Korean by two bilingual individuals, using a forward-backward translation procedure, and completed pilot test.