Table 1.

Subjects. Composition and details on the members of the different groups of subjects.

Groups	Sub-group	Male, Female	Mean age	Standard deviation
Healthy subjects	Young	11, 4	25.3	3.6
	Senior	2, 5	73.3	4.6
Simulated patients	Young	18, 2	23.15	2.0
	Senior	1, 1	70.5	9.2
Patients	N/A	1, 1	72.0	1.5