I have data from a questionnaire to determine the level of diabetic foot care knowledge (DFCK) among undergraduate Podiatry students. The DFCK (i.e. outcome) is a score based on the total number of the right answers given by the students for 25 questions related to podiatry.
I want to determine whether there is an association between certain characteristics of the students like age (categorical: < 25 and >=25), gender (M/F), podiatric clinical interest (a list of clinical interests from which the students can choose one or more interests), previous degree (yes/no), previous diabetic foot care experience (yes/no), personal or family history of diabetes (yes/no) and DFCK among undergraduate Podiatry students.
I am doing a Mann-Whitney test for all the variables to determine whether they are associated with DFCK score but podiatric clinical interest.
As the podiatric clinical interest is a multiple choice question, can someone please help me what method to use to determine whether it is associated with the DFCK score.