Skip to main content

Table 1 Characteristics of study population

From: Catquest-9SF questionnaire: validation of Malay and Chinese-language versions using Rasch analysis

  Malay version
(n = 236)
Chinese version
(n = 202)
n (%) n (%)
Age (years):
 Mean (SD) 63 (10.1) 68 (9.0)
 Minimum, maximum 21, 84 29, 86
Gender:
 Male 107 (45.3) 93 (46.0)
 Female 129 (54.7) 109 (54.0)
Race:
 Malay 179 (75.8) 0 (0.0)
 Chinese 2 (0.8) 202 (100.0)
 Indian 31 (13.1) 0 (0.0)
 Others 24 (10.2) 0 (0.0)
Education level:
 No formal education 49 (20.8) 51 (25.2)
 Primary 88 (37.3) 101 (50.0)
 Secondary 82 (34.7) 44 (21.8)
 Higher education 15 (6.4) 5 (2.5)
Best corrected visual acuity:
 6/6–6/15 76 (32.2) 79 (39.1)
 6/18–3/60 104 (44.1) 92 (45.5)
 2/60 – NPL 4 (1.7) 4 (2.0)
Ocular comorbiditya 63 (26.7) 74 (36.6)
Systemic comorbidityb 180 (76.3) 137 (67.8)
Answering questionnaire:
 Self-administered 77 (32.6) 62 (30.7)
 Assistant administered 157 (66.5) 139 (68.8)
  1. Number and column percentages are based on available information; the remaining unreported percentage is missing value
  2. SD Standard deviation, NPL No perception of light
  3. aIncludes cornea disease, glaucoma, retina disease, non-proliferative diabetic retinopathy, proliferative diabetic retinopathy, pterygium, others
  4. bIncludes diabetes mellitus, hypertension, heart disease, hyperlipidaemia, others