Table 1 Characteristics of Participants in the Singapore Chinese Eye Study.

From: Trends of Visual Impairment and Blindness in the Singapore Chinese Population over a Decade

 

Persons with presenting normal vision* (N = 2636)

Persons with presenting bilateral visual impairment or blindness* (n = 717)

P value

Age, year

57.83 (9.0)

66.49 (10.2)

<0.001

Female gender, n (%)

1,305 (49.5)

385 (53.7)

0.049

Body Mass Index, kg/m2

23.8 (3.6)

23.3 (3.8)

0.002

Hypertension, n (%)

1,508 (57.3)

536 (74.8)

<0.001

Diabetes, n (%)

431 (16.4)

161 (22.5)

<0.001

Cardiovascular disease, n (%)

156 (5.9)

78 (10.9)

<0.001

Chronic Kidney Disease, n (%)

128 (5.1)

97 (14.6)

<0.001

Smoking status, n. (%)

Never smoked

1,960 (74.4)

503 (70.2)

0.016

Current smoker

346 (13.1)

96 (13.4)

Past smoker

328 (12.5)

118 (16.5)

Alcohol consumption, n (%)

305 (11.6)

61 (8.5)

0.020

Housing, n (%)

1-2 room public housing flat

41 (1.6)

33 (4.6)

<0.001

3-4 room public housing flat

1,442 (54.8)

496 (69.3)

≥5-room public housing flat

1,149 (43.7)

187 (26.1)

Monthly Income status, n (%)

<S$2000

1,666 (65.2)

616 (88.5)

<0.001

≥S$2000

889 (34.8)

80 (11.5)

Education, n (%)

No formal education

437 (16.6)

318 (44.4)

<0.001

Primary school education or above

2,197 (83.4)

398 (55.6)

  1. Data presented are means (standard deviations) or number (%), as appropriate. S$ = Singapore Dollars.
  2. *Using the U.S definition, normal vision was defined as ≥20/40, and bilateral visual impairment or worse was defined as VA < 20/40, based on better-seeing eye.