Assessment of knowledge, attitude and practice of hand ...- assessment of hand washing ,Assessment of knowledge, attitude and practice of hand washing among health care workers in Ain Shams University hospitals in Cairo. Abd Elaziz KM(1), Bakr IM. Author information: (1)Community, Environmental and Occupational Medicine Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt. [email protected] Institution-Based Assessment of Students' Hand Washing ...The last part assessed hand washing skills of the study participants using 10 questions. The participant's score of each aspect of hand washing (knowledge, practices, and skills) was calculated by dividing the score obtained by each study participant in that aspect by the number of questions and multiplying by a hundred.