To detect association between the demographic data of pediatric patients including age ,sex,hospital stay and clinical data including the diagnosis and co morbidity with the outcome of pediatric patients admitted to ICU of Assiut University children hospital

The demographic data (including age groups and gender).

Regarding age groups, the number of patients in each of three groups will be addressed:

1. 1 month to 2 years of age
2. 2 years to 12 years of age
3. 12 to 18 years of age"

Regarding gender, the number of patients will be allocated in 2 groups:

1. male
2. female

Provisional diagnosis on admission categorised by the system affected (respiratory, cardiovascular, neurological, hematological, renal, endocrinal and metabolic gastrointestinal and hepatobiliary, multi system affection, others (post operative, post arrest, sepsis syndrome, malignancies, poisoning, coma of unknownorigin)). The data will be presented as number of patients in each group of system affected.

The patients will be allocated in 2 groups of referral sites of patients admitted to the PICU:

1. the ward
2. the emergency department. Data will be presented as number of patients in each group.

The patients will be allocated in 2 groups based on the need for mechanical ventilation duringthe PICU stay. In case of need for mechanical ventilation, the duration will be recorded in days.

Length of stay in the pediatric intensive care unit (PICU) will be presented as number of days spent by the patient from admission to discharge or death.

Correlation between number of patients in discharge groups (survivors / dead) and age group.

Correlation between number of patients in discharge groups (survivors / dead) and diagnosis on admission.