Table 1 Sociodemographic and health-related characteristics of the study sample

80.1 (5.34)

78.52 (5.01)

81.34 (5.27)

< .001^b

9.55 (2.15)

10.25 (2.58)

9.02 (1.59)

< .001^b

Marital status

Unmarried, n (%)

24 (5.5)

12 (6.5)

12 (4.8)

< .001^a

Married, n (%)

193 (44.3)

124 (67.0)

69 (27.5)

Divorced, n (%)

29 (6.7)

10 (5.4)

19 (7.6)

Widowed, n (%)

190 (43.6)

39 (21.1)

151 (60.2)

214 (49.1)

45 (24.3)

169 (67.3)

< .001^a

216 (49.5)

61 (33.0)

155 (61.8)

< .001^a

291 (66.7)

118 (63.8)

173 (68.9)

.260^a

136 (31.3)

56 (30.3)

80 (32.1)

.680^a

Support of informal caregiver (yes), n (%)

Spouse/ partner, n (%)

135 (45.5)

94 (72.9)

41 (24.4)

< .001^a

Daughter/ son, n (%)

110 (36.9)

24 (18.6)

86 (50.9)

Daughter-/ son-in-law, n (%)

15 (5.0)

3 (2.3)

12 (7.1)

Granddaughter/ -son, n (%)

11 (3.7)

1 (0.8)

10 (5.9)

Others, n (%)

27 (9.1)

7 (5.4)

20 (11.8)

4.00 (0.67)

4.01 (0.74)

3.99 (0.61)

.810^b

Cognitive impairment (MMSE)

Score, mean (SD)

22.72 (4.80)

23.23 (4.88)

22.33 (4.71)

.053^b

None (score, 27–30), n (%)

105 (24.1)

55 (29.7)

50 (20.0)

.130^a

Mild (score, 20–26), n (%)

231 (53.1)

94 (50.8)

137 (54.8)

Moderate (score, 10–19), n (%)

93 (21.4)

34 (18.4)

59 (23.6)

Severe (score, 0–9), n (%)

6 (1.4)

2 (1.1)

4 (1.6)

67 (15.4)

24 (13.0)

43 (17.2)

.236^a

164 (37.7)

47 (25.4)

117 (46.8)

< .001^a

251 (57.6)

104 (56.2)

147 (58.6)

.624^a

3.50 (2.36)

3.24 (2.27)

3.68 (2.41)

.051^b

63 (14.4)

12 (6.5)

51 (20.3)

< .001

2.78 (0.36)

2.80 (0.35)

2.77 (0.37)

.290^b