How do I use the randomisation service?
A. The randomisation service for STICH II is an automated telephone-based service that works 24 hours a day. To randomise a patient your centre must be fully registered with the trial. Once registered you will be given the telephone number for the service and your own centre number. More detailed instructions can be found here. Q. How do you measure the volume of the haematoma? A. In this study the volume of the haematoma on a CT scan is measured as follows: • Identify the CT slice with the largest area of haemorrhage. • Identify and measure the longest diameter of the haematoma on this slice, using the centimeter scale on the CT film (a). • Measure the diameter of the haematoma at 90° to this longest diameter, using the same scale (b). • Count the number of 1cm CT slices on which the haemorrhage is visualised, thus measure the third diameter (c). If your scanner scans at a different interval count the number of slices and multiply by the size of the interval in centimetres (cm). • Cal
