- Short Form -12 (SF-12) The SF-12 was developed as a short form of the 36-item Short-Form Health Survey (SF-36). The questionnaire consists of 12 questions and uses a Likert scale of 1 to 3 for the physical function items; 1 to 5 for the bodily pain, social function, and general health perceptions items; 1 to 6 for the vitality and mental health; and a dichotomous scale of yes/no for the presence of role function limitations. The higher score, the higher level of health or functioning (34).