A cross sectional study conducted from February to April 2012 in 411 patients hospitalized within 24 hours in the Hospital 198 showed that: The prevalence of malnutrition classified by BMI of female patients was 3 times higher than that of male patients and prevalence of malnutrition of <45 year old patients by BMI was 3 times higher than that of > 45 year old patients (p<0.01).