Table 1 Characteristics of Han and Yugur participants in Gansu Province, China, 2016.

From: Prevalence and risk factors of myopia in Han and Yugur older adults in Gansu, China: a cross-sectional study

 

Male

P

Female

P

Han n = 1190

Yugur n = 507

Han n = 1598

Yugur =550

Age (year)

55.1 ± 8.7

53.0 ± 8.4

<0.001

53.9 ± 8.0

52.3 ± 7.9

<0.001

Age group

  

<0.001

  

0.014

   40–49

400 (33.6)

239 (47.1)

 

579 (36.4)

241 (43.8)

 

   50–59

430 (36.1)

162 (32.0)

 

630 (39.7)

198 (36.0)

 

   60–69

292 (24.5)

98 (19.3)

 

333 (21.0)

97 (17.6)

 

   70–80

68 (5.7))

17 (3.4)

 

56 (3.5)

14 (2.5)

 

Height (cm)

168.7 ± 5.9

169.40 ± 5.7

0.021

157.5 ± 5.1

158.4 ± 5.8

0.001

Weight (kg)

69.7 ± 10.2

71.2 ± 11.6

0.008

58.8 ± 8.0

64.3 ± 12.0

<0.001

BMI (kg/m2)

24.5 ± 3.1

24.7 ± 3.5

0.086

23.7 ± 2.9

25.6 ± 4.2

<0.001

Birthplace

  

<0.001

  

<0.001

   Urban

278 (23.4)

25 (4.9)

 

553 (34.6)

44 (8.0)

 

   Rural

912 (76.6)

482 (95.1)

 

1045 (65.4)

506 (92.0)

 

Occupation

  

<0.001

  

<0.001

   Outdoor

451 (37.9)

342 (67.5)

 

529 (33.1)

346 (62.9)

 

   Indoor

739 (62.1)

165 (32.5)

 

1069 (66.9)

204 (37.1)

 

Time spent in rural areas (year)

32.0 ± 23.9

43.5 ± 18.1

<0.001

26.5 ± 23.8

42.6 ± 18.4

<0.001

Education

  

<0.001

  

<0.001

   Primary school or below

292 (24.5)

264 (52.1)

 

620 (38.8)

397 (72.2)

 

   High school

572 (48.1)

173 (34.1)

 

694 (43.4)

111 (20.2)

 

   Undergraduate/graduate

326 (27.4)

70 (13.8)

 

284 (17.8)

42 (7,6)

 

Hypertension

420 (35.3)

225 (44.4)

<0.001

455 (28.5)

192 (34.9)

0.005

Diabetes

142 (11.9)

37 (7.3)

0.004

89 (5.6)

21 (3.8)

0.108

Smoking status

  

<0.001

  

<0.001

   Never-smoke

301 (25.8)

88 (17.4)

 

1588 (99.9)

519 (94.4)

 

   Ever-smoke

889 (74.2)

419 (82.6)

 

10 (0.1)

31 (5.6)

 

Alcohol consumption

  

0.008

  

<0.001

   Never-drink

138 (11.6)

37 (7.3)

 

1071 (67.0)

279 (50.7)

 

   Ever-drink

1051 (88.4)

470 (92.7)

 

527 (33.0)

271 (49.3)

 

Physical activity level

  

<0.001

  

<0.001

   Light

107 (9.0)

28 (5.5)

 

207 (13.0.)

57 (10.4)

 

   Moderate

882 (74.1)

340 (67.1)

 

1188 (74.3)

360 (65.5)

 

   Heavy

201 (16.9)

139 (27.4)

 

203 (12.7)

133 (24.2)

 
  1. Note: BMI: Body mass index was defined as weight (kg)/height (m)2. 1) 125 participants had missing values on refractive error data; 2) 51 participants had missing values on birth place information; 3) 65 participants had missing values on education or work information. The Chi-square test was used to evaluate the demographic and life-style factors differences between Han and Yugur participants.
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