Chile, Bio Bio (2006)

Chile, 2006
Bio Bio
Trainer
Hans Limburg
Sample size
3000
Response rate
97.2%
RAAB version
RAAB5
Diabetic retinopathy
No
Disability module
No

Survey comparison

Vision impairment

Prevalence (age-sex adjusted)

Female
Male
Total
Extrapolated magnitude
%
95% CI
Extrapolated magnitude
%
95% CI
Extrapolated magnitude
%
95% CI
Blind
2958
1.3
0.8 - 1.9
2791
1.4
0.5 - 2.3
5749
1.4
0.8 - 1.9
Severe
2456
1.1
0.6 - 1.6
1439
0.7
0.2 - 1.2
3895
0.9
0.5 - 1.3
Moderate
16904
7.6
6.2 - 9.0
11739
6.0
4.2 - 7.8
28643
6.8
5.6 - 8.1

Cataract

Cataract surgical coverage (CSC) (age-sex adjusted)

Female
Male
Total
%
95% CI
%
95% CI
%
95% CI
<3/60
-
82.6
71.5 - 93.7
-
62.3
46.6 - 46.6
-
74.3
65.4 - 83.2
<6/60
-
74.0
61.8 - 86.2
-
59.5
44.9 - 74.1
-
68.1
58.5 - 77.7
<6/18
-
43.1
34.4 - 51.8
-
35.2
25.7 - 44.7
-
40.0
33.3 - 46.6

Unmet need for cataract surgery: magnitude & prevalence (age-sex adjusted)

Female
Male
Total
Extrapolated magnitude
%
95% CI
Extrapolated magnitude
%
95% CI
Extrapolated magnitude
%
95% CI
<3/60
1093
0.5
0.1 - 0.8
1654
0.8
0.2 - 1.5
2746
0.7
0.3 - 1.0
<6/60
1864
0.8
0.3 - 1.3
1991
1.0
0.4 - 1.7
3854
0.9
0.5 - 1.3
<6/18
7949
3.6
2.6 - 4.5
5999
3.1
1.9 - 4.2
13948
3.3
2.5 - 4.2

Notes

Vision impairment categories defined according to WHO thresholds using presenting visual acuity in the better eye.

All prevalence and coverage estimates are adjusted to the age and gender distribution of the population 50 years and older in the survey area.

All 95% confidence intervals adjusted to account for the cluster design of the survey.

Effective cataract surgical coverage (eCSC) and cataract surgical coverage (CSC) are calculated according to the 2022 definition; eCSC is only reported where 6/12 data available.

Refractive error results, including effective refractive error coverage (eREC), only reported where 6/12 data available. RAAB6 surveys measured presenting visual acuity (not uncorrected visual acuity) so the alternative calculation for eREC is used.