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Table 2 Latin square design of condition rounds over time at the three clinical genetic centres

From: Design of the BRISC study: a multicentre controlled clinical trial to optimize the communication of breast cancer risks in genetic counselling

  Conditionsa
  months 1–5 months 6–10 months 11–15 months 16–20 months 21–25
Centre A 1 2 3 4 5
Centre B 2 3 4 5 1
Centre C 5 1 2 3 4
  1. a. 1) lifetime risk in numerical format (natural frequencies); 2) lifetime risk in both numerical format and graphical format (population figures); 3) lifetime risk and age-related risk in numerical format; 4) lifetime risk and age-related risk in both numerical format and graphical format; 5) lifetime risk in percentages. Condition 6 (control group) is constructed in addition to each condition round.