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Table 1 Background characteristics of study group

From: Psychometric validation of the visual function questionnaire-25 in patients with diabetic macular edema

Characteristic

Baseline (week 0) N = 235

Age (years)

 

Mean ± SD

62 ± 10

Median (IQR)

62 (56 – 69)

Range

20 – 83

Female, n (%)

102 (43.4)

Ethnicity, n (%)

 

Caucasian/White

192 (81.7)

Asian

25 (10.6)

Other (Black, Hispanic/Latino, unspecified)

18 (7.6)

ECOG Performance Status

 

Mean ± SD

0.5 ± 0.5

Median (IQR)

0 (0 – 1)

Range

0 – 2

Type II diabetes, n (%)

218 (92.8)

Duration of vision problems, n (%)

 

None

1 (0.4)

<1 year

93 (39.6)

1-5 years

122 (51.9)

6-10 years

15 (6.4)

>11 years

4 (1.7)

ETDRS visual acuity scale: study eye

 

85 letters or more (20/16 or more)

0 (0.0)

85-75 letters (20/20 - 20/32)

0 (0.0)

74-70 letters (20/40)

3 (1.3)

69-55 letters (20/50 - 20/80)

160 (68.1)

54-40 letters (20/100 - 20/160)

61 (26.0)

39-35 letters (20/200)

11 (4.7)

34 letters or less (20/250 or less)

0 (0.0)

ETDRS visual acuity scale: fellow eye

 

85 letters or more (20/16 or more)

11 (4.7)

85-75 letters (20/20 - 20/32)

75 (32.2)

74-70 letters (20/40)

30 (12.9)

69-55 letters (20/50 - 20/80)

60 (25.8)

54-40 letters (20/100 - 20/160)

31 (13.3)

39-35 letters (20/200)

9 (3.9)

34 letters or less (20/250 or less)

14 (6.0)

Counting fingers-hand motion

3 (1.3)

  1. * ETDRS = Early Treatment Diabetic Retinopathy Study.
  2. Note: Percentages are based on non-missing categories.