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Table 1 Baseline characteristic of the study sample and examiner, location, and time to ultrasound

From: Prehospital stroke diagnostics based on neurological examination and transcranial ultrasound

Characteristic Value
All patients, n 232
Patients included, n 102
Sex (female/male) 54/48
Mean age (SD) 76.8 (13.41)
Ultrasound examination time (mean, SD) 5 min, 36 s (2 min,12 s)
Alarm-to-handover duration (mean, SD) 65 min (25 min)
Contrast enhanced TCCS, n 41
Distance to hospital, km 10 (2–41)
Clinic admission, n = 102  
  Stroke unit 98
  Internal Medicine 3
  Telemedicine Stroke unit 1
Examining physician  
Investigator 1 57
Investigator 2 42
Investigator 3 3
Site of ultrasound investigation  
  Patient's home 51 (50%)
  During transport in ambulance car 43 (42%)
  Private office practice 4 (4%)
  Public space 2 (2%)
  Senior citizen home 2 (2%)
  1. TCCS, transcranial color-coded sonography; SD, standard deviation.