Visit | Sonographer | Reader | Replicate |
---|
A | X | x | 1 |
 |  | x | 2 |
 |  | y | 1 |
 |  | y | 2 |
 | Y | x | 1 |
 |  | x | 2 |
 |  | y | 1 |
 |  | y | 2 |
B | X | x | 1 |
 |  | x | 2 |
 |  | y | 1 |
 |  | y | 2 |
 | Y | x | 1 |
 |  | x | 2 |
 |  | y | 1 |
 |  | y | 2 |
- Every participant performed two visits (A and B). At every visit they were scanned twice by each of the sonographers X and Y, and every scanning was read twice (replicate 1 and 2) by each of the two readers (x and y).