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Table 2 Characteristics of participants with and without polypharmacy

From: Association of personality traits with polypharmacy among community-dwelling older adults in Japan: a cross-sectional analysis of data from the SONIC study

 

Men

Women

No Polypharmacy

Polypharmacy

P

-value

No Polypharmacy

Polypharmacy

P

-value

(N = 312)

(N = 98)

(N = 331)

(N = 125)

Subjective economic status (%)

  

0.051

  

0.031

 Economically difficult

80 (26.5)

16 (16.8)

 

59 (18.7)

37 (30.1)

 

 Usually adequate

152 (50.3)

61 (64.2)

 

180 (57.0)

58 (47.2)

 

 Economically adequate

70 (23.2)

18 (18.9)

 

77 (24.4)

28 (22.8)

 

Drinking habits (current; %)

200 (66.2)

58 (61.1)

0.357

47 (14.9)

7 (5.7)

0.009

Smoking habits (current; %)

51 (16.9)

15 (15.8)

0.802

7 (2.2)

5 (4.1)

0.286

Body mass index (≥ 25; %)

65 (21.5)

26 (27.4)

0.237

64 (20.3)

31 (25.2)

0.258

IADL (dependent; %)

52 (17.2)

19 (20.0)

0.537

3 (0.9)

3 (2.4)

0.227

Depressive mood (depressive; %)

52 (17.2)

21 (22.1)

0.284

57 (18.0)

32 (26.0)

0.062

Number of chronic diseases (%)

  

 < 0.001

  

 < 0.001

 0–1

127 (42.1)

13 (13.7)

 

115 (36.4)

9 (7.3)

 

 2

88 (29.1)

13 (13.7)

 

92 (29.1)

24 (19.5)

 

 ≥ 3

87 (28.8)

69 (72.6)

 

109 (34.5)

90 (73.2)

 

Personality traits (mean ± SD)

 Neuroticism

20.4 ± 5.4

21.8 ± 4.9

0.020

21.9 ± 5.4

23.2 ± 5.6

0.021

 Extraversion

26.3 ± 5.2

26.0 ± 5.6

0.686

27.0 ± 5.2

25.6 ± 5.1

0.012

 Openness

26.4 ± 4.4

26.0 ± 3.9

0.424

27.2 ± 4.3

27.5 ± 4.6

0.483

 Agreeableness

30.5 ± 4.2

30.6 ± 4.1

0.934

32.9 ± 4.4

32.4 ± 4.5

0.376

 Conscientiousness

30.1 ± 4.8

29.8 ± 4.6

0.640

30.1 ± 5.3

30.0 ± 4.7

0.839

  1. IADL instrumental activities of daily living, SD standard deviation
  2. Tested using the chi-square test or t-test