Table 1.

Participants’ characteristics

	Cologne	Valencia	Sydney	Siegen	Overall
Participants (n)	n = 15	n = 20	n = 15	n =10	n = 60
Intervention period (months)	4	4	4	6	4 to 6
Mean age (years, SD)	72.1 ± 3.6	71.5 ± 3.8	76.5 ± 4.6	70.9 ± 3.9	72.6 ± 4.0
Female (n, %)	9 (60)	13 (65)	9 (60)	6 (60)	37 (61,7)

n = number of participants, separated for each study center; Intervention period is presented in months, separated for each study center; Mean age is presented in years and standard deviation, separated for each study center; Females are presented with number of females and percentage of females, proportional to the total number of participants