Figure 3From: Quality of human-computer interaction - results of a national usability survey of hospital-IT in Germany Software ergonomics: 'suitability for learning' differentiated by systems. n = calculated questionnaires, h = included hospitals (5 = good, 1 = poor) blue line: WinWord 2003, red SAP R3 [22, 34]; Reliability (Cronbachs alpha) = 0,851 (pretest = 0,797).Back to article page