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Table 2 Combination schedule of observers and patients

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

  Gp1 Gp2 Gp3 Gp4 Gp5 Gp6
AN1 Pat01 – MA1 Pat02 – MA2 Pat03 – MA3 Pat04 – MA4 Pat05 – MA5 Pat06 – MA6
An2 Pat07 – MA2 Pat08 – MA3 Pat09 – MA4 Pat10 – MA5 Pat11 – MA6 Pat12 – MA1
An3 Pat13 – MA3 Pat14 – MA4 Pat15 – MA5 Pat16 – MA6 Pat17 – MA1 Pat18 – MA2
An4 Pat19 – MA4 Pat20 – MA5 Pat21 – MA6 Pat22 – MA1 Pat23 – MA2 Pat24 – MA3
An5 Pat25 – MA5 Pat26 – MA6 Pat27 – MA1 Pat28 – MA2 Pat29 – MA3 Pat30 – MA4
An6 Pat31 – MA6 Pat32 – MA1 Pat33 – MA2 Pat34 – MA3 Pat35 – MA4 Pat36 – MA5
  1. AN: Angiologist; GP: General Practitioner; MA: Medical Assistant
  2. Example: Patient 20 (Pat20) is measured by Angiologist 4 (AN4), General Physician 2 (GP2) and Medical Assistant 5 (MA5). Each subject saw exactly one observer from each of the three observer groups, and each observer measured six subjects. Note that this schedule was repeated twice on each patient group of 36 patients to obtain repeat measurements.