To conduct the study "Effectiveness of Clinical Decision Making (CDM) workshop in group of Myanmar Physical Therapists" , three preliminary studies have to be done before conducting the main study. Three preliminary studies are 1) Development of Clinical Decision Making (CDM) assessment worksheet, Qualitative Approach (in-depth interview) with 18 physical therapists form Yangon, 2) Validity and Reliability study of Clinical Decision Making (CDM) assessment worksheet and 3) Development of series of Clinical Decision Making (CDM) workshop based on the emerged themes and developed categories to represent the CDM knowledge in Myanmar physical therapists. Study 1 and 3 were done in order to able to develop the protocol of the main study.