Table 1 Characteristics of total and test-retest respondents

Sex^a

0.215

 Male

520

52.0%

85

56.7%

 Female

480

48.0%

65

43.3%

Age (mean[SD])

51.7 (15.3)

50.6 (15.1)

0.789

Age group (years)^a

0.306

 18–34

174

17.4%

28

18.7%

 35–44

162

16.2%

26

17.3%

 45–54

192

19.2%

27

18.0%

 55–64

179

17.9%

34

22.7%

 ≥ 65

293

29.3%

35

23.3%

Residence (Geographical division)^a

0.710

 North

184

18.4%

25

16.7%

 Northeast

173

17.3%

22

14.7%

 East

134

13.4%

20

13.3%

 Central

136

13.6%

22

14.7%

 South

96

9.6%

20

13.3%

 Southwest

131

13.1%

20

13.3%

 Northwest

146

14.6%

21

14.0%

BMI^b(mean[SD])

27.4 (2.8)

27.2 (2.7)

0.814

BMI group^a

0.158

 24 ≤ BMI<28

677

67.7%

109

72.7%

 BMI ≥ 28

323

32.3%

41

27.3%

Residence

0.602

 Urban area

832

83.2%

127

84.7%

 Rural area

168

16.8%

23

15.3%

Ethnic group

0.745

 Han

977

97.7%

146

97.3%

 Minority

23

2.3%

4

2.7%

Education

0.207

 Primary or below

196

19.6%

22

14.7%

 Junior high school

312

31.2%

43

28.7%

 Senior high school

338

33.8%

58

38.7%

 College or above

154

15.4%

27

18.0%

Marital status

0.037^c

 Unmarried

81

8.1%

20

13.3%

 Married

890

89.0%

126

84.0%

 Divorced

12

1.2%

3

2.0%

 Widowed

17

1.7%

1

0.7%

Employment status

0.988

 Employed

683

68.3%

103

68.7%

 Retired

284

28.4%

42

28.0%

 Student

11

1.1%

2

1.3%

 Unemployed

22

2.2%

3

2.0%

Personal monthly income

0.672

 <2000 RMB

70

7.0%

11

7.3%

 2000–5000 RMB

386

38.6%

52

34.7%

 5000–10,000 RMB

444

44.4%

69

46.0%

 >10,000 RMB

100

10.0%

18

12.0%

Basic medical insurance

0.750

 Urban employee

811

81.1%

125

83.3%

 Urban and rural resident

174

17.4%

23

15.3%

 No

15

1.5%

2

1.3%

Commercial insurance

0.235

 Yes

88

8.8%

17

11.3%

 No

912

91.2%

133

88.7%

Self-report health status

0.898

 Poor

167

16.7%

24

16.0%

 General

440

44.0%

63

42.0%

 Good

314

31.4%

51

34.0%

 Very good

79

7.9%

12

8.0%

Hypertension

0.969

 Yes

292

29.2%

44

29.3%

 No

708

70.8%

106

70.7%

Diabetes

0.608

 Yes

89

8.9%

15

10.0%

 No

911

91.1%

135

90.0%

Hyperlipidemia

0.183

 Yes

327

32.7%

42

28.0%

 No

673

67.3%

108

72.0%

Number of chronic diseases

0.276

 0

410

41.0%

66

44.0%

 1

182

18.2%

22

14.7%

 2

169

16.9%

30

20.0%

 3

96

9.6%

9

6.0%

 ≥ 4

143

14.3%

23

15.3%

Weight loss therapy

0.017^c

 Yes

231

23.1%

46

30.7%

 No

769

76.9%

104

69.3%

Smoking status

0.357

 Never smoked

588

58.8%

85

56.7%

 Used to smoke

239

23.9%

33

22.0%

 Smoking now

173

17.3%

32

21.3%

Drinking status

0.188

 Never drink

393

39.3%

69

46.0%

 Used to drink

243

24.3%

33

22.0%

 Drinking now

364

36.4%

48

32.0%

Exercise duration/week

0.455

 ≤ 3.5 h

568

56.8%

81

54.0%

 3.5–7.5 h

395

39.5%

61

40.7%

 ≥ 7.5 h

37

3.7%

8

5.3%

Fruit and vegetable intake

0.650

 Rarely intake

174

17.4%

30

20.0%

 Sometimes intake

338

33.8%

50

33.3%

 Often intake

488

48.8%

70

46.7%

High sugar oil food intake

0.935

 Rarely intake

152

15.2%

22

14.7%

 Sometimes intake

473

47.3%

73

48.7%

 Often intake

375

37.5%

55

36.7%

Sleep duration/day

0.077

 <7 h

579

57.9%

77

51.3%

 ≥ 7 h

421

42.1%

73

48.7%

EQ-5D-5 L utility (mean[SD])

0.851 (0.195)

0.842 (0.173)

IWQOL-Lite score (mean[SD])

78.5 (20.0)

76.9 (17.8)