Hospital level, age, education level, seniority, training, training methods, taking care of patients with Covid-19 disease, relatives with Covid-19 disease, living places with Covid-19 patients, participating in anti-epidemic, knowledge gained is related to practice with OR of: 2.7; 1.5 - 1.4; 1.5; 1.6 - 1.6 - 1.5; 1.7; 1.7 - 2.1; 1.4; 2.9; 1.7; 1.5; 7.2.