Item

Class

Intervention Group (n = 50)

Comparison Group (n = 50)

Statistics

P Value

Age

53.27 ± 9.34

54.16 ± 8.69

t = 0.493

0.311

Weight

62.54 ± 10.12

64.11 ± 12.03

t = 0.706

0.241

Educational level

Junior high school and below

14

12

High school (secondary school)

19

20

Z = 0.206

0.902

College and above

17

18

Occupation

Institution

4

6

Business unit

13

12

Self-employed

18

17

x² = 1.069

0.899

Farmer

11

9

other

4

6

Monthly per capita income

Less than 3000 yuan

23

21

3000 - 6000

19

22

Z = 0.373

0.829

More than 6000 yuan

8

7

Medical expenses

Medical insurance

22

21

Rural cooperative medical care

25

27

x² = 0.301

0.861

Self-pay

3

2

Ethnic group Han

44

46

x² = 0.445

0.506

Other

6

4