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+# Data from: Factors Related to Time of Stroke Onset Versus Time of Hospital Arrival  
+### A SITS Registry-Based Study in an Egyptian Stroke Center
+
+## Creators
+- **Hossam Shokri**  
+- **Nevine El Nahas**  
+- **Hany Aref**  
+- **Noha Dawood**  
+- **Eman Abushady**  
+- **Shady Georgy**  
+- **Amr Zaki**  
+- **Rady Bedros**  
+- **Eman Abd Eldayem**  
+- **Mona Wahid El Din**  
+- **Tamer Roushdy**
+
+## Description
+
+### **Background**
+High-quality data on time of **stroke onset** and **hospital arrival** is critical for evaluating delays in accessing medical care after the onset of stroke symptoms.
+
+### **Purpose**
+Using the **SITS dataset** for Egyptian stroke patients, this study explores the relationship between:
+- Time of stroke onset
+- Time of hospital arrival  
+... and other relevant clinical and demographic factors.
+
+### **Material and Methods**
+- **Patients:** 1,450 acute ischemic stroke (AIS) patients  
+- **Centers:** Two stroke centers at Ain Shams University, Cairo, Egypt  
+- **Time Analysis:** The day was divided into four quarters  
+- **Factors Studied:**
+  - Age  
+  - Sex  
+  - Duration from stroke onset to hospital arrival  
+  - Type of management  
+  - Type of stroke (TOAST classification)  
+  - NIHSS on admission  
+  - Favorable outcome (mRS ≤ 2)
+
+### **Results**
+#### *Pre-Hospital Findings:*
+- **Highest stroke incidence** was observed in the **first and fourth quarters** of the day.
+- No significant difference in:
+  - Mean age  
+  - Sex  
+  - Type of stroke across different onset times  
+- **NIHSS scores** were significantly lower for strokes starting in the **third quarter** of the day.
+- **Thrombolytic therapy** was more common in strokes that occurred during the **first two quarters** of the day (*p < 0.001*).
+
+#### *In-Hospital Findings:*
+- No significant difference in:
+  - Percentage of patients receiving thrombolysis  
+  - Outcome measures across the four quarters of **hospital arrival**
+
+### **Conclusion**
+- **Pre-hospital delays** remain a barrier to receiving timely thrombolysis.
+- **In-hospital performance** showed consistency regardless of time of arrival.