Table 1 Single-factor chi-square analysis of the demographic characteristics (N = 167)

Gender

Female

136

81.4

19.24 ± 6.72

0.275

0.601

Male

31

18.60

18.55 ± 6.37

Age (year)

Y < 50

6

3.60

19.83 ± 3.60

0.540

0.706

50 ≤ Y < 60

22

13.20

19.09 ± 4.51

60 ≤ Y < 70

74

44.30

18.32 ± 7.25

70 ≤ Y < 80

53

31.70

20.02 ± 6.45

80 ≤ Y

12

7.20

19.67 ± 8.15

BMI (kg/m²)

BMI < 18.5

3

1.80

19.67 ± 5.51

0.620

0.685

18.5 ≤ BMI < 24

59

35.30

19.05 ± 7.08

24 ≤ BMI < 28

63

37.70

19.49 ± 7.17

28 ≤ BMI < 30

20

12.00

17.65 ± 5.32

30 ≤ BMI < 40

19

11.40

18.68 ± 2.89

40 ≤ BMI

3

1.80

24.33 ± 13.01