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Figure 4 | BMC Cardiovascular Disorders

Figure 4

From: A new efficient trial design for assessing reliability of ankle-brachial index measures by three different observer groups

Figure 4

Bland-Altman plot of all duplicate measurements by all six angiologists (blue), six general physicians (red) and six medical office assistants (green) on a total of 108 subjects in groups 1–3. Figure legend: red, green and blue circles = subjects; coloured lines = ± 2SD; black line = global mean of differences; for comparison, the difference between a healthy patient (ABI > 1.1) and a suspected PAD patient (ABI < 0.9) is 0.2 ABI points.

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