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Table 1 Sonographers and hospitals’ characteristics

From: Impact of a training program incorporating cardiac magnetic resonance imaging on the accuracy and reproducibility of two-dimensional echocardiographic measurements of left ventricular volumes and ejection fraction

  Type of hospital Number of beds Number of studies by year Number of sonographers Number of participants Experience (years) Expert Active sonographer Number of participants doing self-practice
Site A University hospital 700 8800 10 9 8 (4, 15) 33% 56% 67%
Site B Public hospital 450 5400 7 7 13 (6, 26) 67% 0% 100%
Site C Private hospital 459 12,000 29 22 12 (8, 15) 67% 27% 60%
Site D Private hospital 380 10,000 8 6 10 (7, 17) 40% 100% 0%
Site E Public hospital 575 6500 10 10 9 (5, 16) 40% 70% 0%