Table 1

Characteristics of the Delphi experts contacted for the first round (left) and those who completed the whole process (right)

All experts (n=35)Experts who completed the Delphi process (n=18)
Domain of expertise
 Psychiatry19 (54%)7 (39%)
 Internal medicine5 (14%)3 (17%)
 Pharmacology4 (11%)4 (22%)
 Neurology4 (11%)2 (11%)
 Geriatric medicine3 (9%)2 (11%)
Country of activity
 Switzerland20 (57%)11 (61%)
 France9 (26%)6 (33%)
 Belgium2 (6%)1 (6%)
 Canada3 (9%)0 (0%)
 Spain1 (3%)0 (0%)