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Table 1 Participants’ sociodemographic and clinical characteristics by gender

From: Multimorbidity and health-related quality of life in Koreans aged 50 or older using KNHANES 2013–2014

Variable

50 and older

65 and older

Total

Male

Female

p-value

Total

Male

Female

p-value

Number of chronic conditions

 0

46.6 (0.9)

52.4 (1.2)

41.5 (1.1)

< 0.0001

32.9 (1.2)

38.7 (1.7)

28.7 (1.5)

< 0.0001

 1

26.6 (0.7)

27.2 (1.1)

26.1 (0.9)

 

29.2 (1.1)

32.9 (1.6)

26.5 (1.3)

 

 2

15.7 (0.6)

12.7 (0.8)

18.4 (0.8)

 

20.3 (0.9)

17.4 (1.2)

22.4 (1.2)

 

 3

7.0 (0.4)

5.1 (0.5)

8.7 (0.6)

 

10.8 (0.7)

7.3 (0.9)

13.2 (1.0)

 

 4+

4.0 (0.3)

2.6 (0.3)

5.3 (0.5)

 

6.9 (0.6)

3.7 (0.6)

9.1 (0.9)

 

EQ-5D index score

0.89 (0.89–0.90)

0.93 (0.92–0.93)

0.87 (0.86–0.88)

< 0.0001

0.83 (0.82–0.84)

0.88 (0.86–0.90)

0.79 (0.78–0.81)

< 0.0001

Current marital status

 Married

76.8 (0.8)

88.5 (0.9)

66.5 (1.0)

< 0.0001

62.1 (1.2)

88.1 (1.1)

43.7 (1.4)

< 0.0001

 Unmarried

23.2 (0.8)

11.5 (0.9)

33.5 (1.0)

 

37.9 (1.2)

11.9 (1.1)

56.3 (1.4)

 

Educationa

 High

17.8 (0.9)

26.8 (1.3)

10.1 (0.8)

< 0.0001

15.7 (1.0)

28.0 (1.7)

6.8 (0.8)

< 0.0001

 Low

82.2 (0.9)

73.2 (1.3)

89.9 (0.8)

 

84.3 (1.0)

72.0 (1.7)

93.2 (0.8)

 

Household incomeb

 Quartile 4

23.8 (1.1)

26.3 (1.3)

21.6 (1.1)

< 0.0001

9.9 (0.8)

11.9 (1.2)

8.4 (0.9)

< 0.0001

 Quartile 3

22.3 (0.8)

24.6 (1.0)

20.3 (0.9)

 

13.2 (0.9)

15.3 (1.2)

11.7 (1.0)

 

 Quartile 2

25.8 (0.9)

26.6 (1.1)

25.1 (1.0)

 

25.9 (1.2)

29.0 (1.6)

23.7 (1.2)

 

 Quartile 1

28.1 (1.1)

22.5 (1.1)

33.0 (1.3)

 

51.0 (1.6)

43.7 (1.9)

56.2 (1.7)

 

Basic livelihood security recipients

 No

94.6 (0.6)

95.5 (0.7)

93.9 (0.7)

0.01

91.5 (1.0)

94.0 (1.0)

89.7 (1.2)

0.0004

 Yes

5.4 (0.6)

4.5 (0.7)

6.1 (0.7)

 

8.5 (1.0)

6.0 (1.0)

10.3 (1.2)

 

Occupation

 White-collar

10.9 (0.7)

17.1 (1.1)

5.5 (0.5)

< 0.0001

2.9 (0.4)

6.0 (1.0)

0.6 (0.2)

< 0.0001

 Blue-collar

42.3 (1.0)

50.3 (1.5)

35.4 (1.1)

 

27.3 (1.2)

33.1 (1.9)

23.1 (1.3)

 

 Unemployed

46.8 (1.0)

32.5 (1.3)

59.1 (1.1)

 

69.8 (1.3)

60.9 (1.9)

76.2 (1.3)

 
  1. Values are presented as % of population (standard error) or geometric mean (95% confidence interval)
  2. There was some overlap in the population between the two age groups with different age cut-off values
  3. EQ-5D, European Quality of Life 5 Dimension
  4. aEducation: low: High school or under for 50–69 years of age and middle school or under for 70 and older years of age; high: college or higher for 50–69 years of age and high school or higher for 70 and older years of age
  5. bHousehold income: household monthly income/\( \sqrt{\mathrm{the}\ \mathrm{household}\ \mathrm{size}} \)