Table 1 Characteristics of study population

Age (years)

77.2 (5.0)

77.0 (5.2)

77.4 (4.8)

W = 324.5

0.82^a

Female gender

27 (54.0)

15 (60.0)

12 (48.0)

χ² = 0.32

0.57^b

 < Primary school certificate

7 (14.0)

4 (16.0)

3 (12.0)

–

0.34^c

 Secondary education

11 (22.0)

6 (24.0)

5 (20.0)

–

 High school

10 (20.0)

7 (28.0)

3 (12.0)

–

 University

22 (44.0)

8 (32.0)

14 (56.0)

–

Body weight (kg)

68.7 (12.2)

70.5 (10.1)

66.9 (13.9)

t = − 1.07, df = 43

0.29^d

MMSE (/30)

23.2 (3.5)

23.2 (3.2)

23.2 (3.9)

W = 320.0

0.89^a

GDS (/15)

2.3 (2.0)

2.2 (2.1)

2.6 (2.0)

W = 235.5

0.46^a

CIRS-G (/56)

6.2 (3.3)

6.7 (3.3)

5.6 (3.3)

t = –1.15, df = 47

0.25^d

 Number of ongoing treatments

4.3 (3.0)

4.4 (3.1)

4.1 (2.9)

W = 289.0

0.65^a

 Analgesic

11 (22.0)

4 (16.0)

7 (28.0)

χ² = 1.05

0.31^b

 Antidepressants

14 (28.0)

7 (28.0)

7 (28.0)

χ² = 0

1.00^b

 Anxiolytics

4 (8.0)

4 (16.0)

0

–

0.11^c

 Hypnotics

1 (2.0)

0

1 (4.0)

–

1.00^c

 Antipsychotics

0

–

–

–

–

 Mood stabilizers

0

–

–

–

–

Beta-blockers

10 (20.0)

9 (36.0)

1 (4.0)

χ² = 6.13

0.01^b