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Table 1 Characteristics of the 1626 participants

From: Prevalence and risk factors of refractive error: a cross-sectional Study in Han and Yi adults in Yunnan, China

 

Han

n = 1085

%

Yi

n = 541

%

P value

Sex

    

0.881

 Male

325

29.95

164

30.31

 

 Female

760

70.05

377

69.69

 

Age (y)

    

0.081

 40–44

128

11.80

78

14.42

 

 45–49

204

18.80

126

23.29

 

 50–54

212

19.54

104

19.22

 

 55–59

170

15.67

66

12.20

 

 60–65

178

16.41

82

15.16

 

 65+

193

17.79

85

15.71

 

Height (cm)

158.34 + 7.52

 

156.89 + 7.11

 

0.0006

Weight (kg)

60.68 + 9.61

 

57.41 + 10.15

 

< 0.0001

BMI (kg/m2)

24.15 + 3.01

 

23.26 + 3.38

 

< 0.0001

Current Residence

    

< 0.0001

 Urban

778

71.71

191

35.30

 

 Rural

307

28.29

350

64.70

 

Birth Place

    

< 0.0001

 Urban

322

29.68

4

0.74

 

 Rural

763

70.32

537

99.26

 

Time spent in rural areas1

30.00 + 24.20

 

51.23 + 12.59

 

< 0.0001

Education

    

< 0.0001

 Primary school or lower

446

41.11

409

75.60

 

 Middle/high school

497

45.81

118

21.81

 

 Undergraduate/graduate

142

13.09

14

2.59

 

Occupation

    

< 0.0001

 Non-close

645

59.45

485

89.65

 

 Close

440

40.55

56

10.35

 

Income2 (Â¥)

    

< 0.0001

  < 800/month

316

29.40

386

71.48

 

 800–2000/month

372

34.60

101

18.70

 

  > 2000/month

387

36.00

53

9.81

 

Hypertension

445

40.01

184

34.01

0.006

Diabetes

65

5.99

15

2.77

0.005

Smoking

    

0.112

 Never

837

77.14

436

80.59

 

 Past/current

248

22.86

105

19.41

 

Drinking

    

0.130

 Never

762

70.23

360

66.54

 

 Past/current

323

29.77

181

33.46

 

Activity level

    

0.043

 Light

165

15.21

58

10.72

 

 Moderate

836

77.05

436

80.59

 

 Heavy

84

7.74

47

8.69

 
  1. Note: 1) Twenty-five participants had missing data regarding time spent in rural areas; 2) 11 participants had missing income data. The Chi-square test and Mann-Whitney test were used to test the demographic differences between the Han and Yi populations