Vietnam, Son La (2010)

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Viet Nam, 2010
Son La
Principal Investigator
Robert Finger
Trainer
Anna-Lena Arnold
Sample size
 3146
Response rate
 97.6%
RAAB version
 RAAB5
Diabetic retinopathy
 No
Disability module
 No

Vision impairment

Prevalence (age-sex adjusted)

Female
Male
Total
Extrapolated magnitude
%
95% CI
Extrapolated magnitude
%
95% CI
Extrapolated magnitude
%
95% CI
Blind
1 687
2.2
1.6 - 2.8
723
1.0
0.6 - 1.5
2 410
1.6
1.2 - 2.0
Severe
1 329
1.8
1.1 - 2.4
508
0.7
0.3 - 1.1
1 838
1.3
0.8 - 1.7
Moderate
6 105
8.0
6.6 - 9.5
4 353
6.2
4.8 - 7.5
10 458
7.1
6.0 - 8.3

Cataract

Operable cataract prevalence (age-sex adjusted)

Female
Male
Total
Extrapolated magnitude
%
95% CI
Extrapolated magnitude
%
95% CI
Extrapolated magnitude
%
95% CI
<3/60
864
1.1
0.7 - 1.6
240
0.3
0.0 - 0.6
1 104
0.8
0.5 - 1.0
<6/60
1 414
1.9
1.3 - 2.4
240
0.3
0.0 - 0.6
1 654
1.1
0.8 - 1.5
<6/18
2 741
3.6
2.9 - 4.4
1 440
2.0
1.3 - 2.7
4 181
2.9
2.3 - 3.4

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

Female
Male
Total
%
95% CI
%
95% CI
%
95% CI
CSC<3/60
-
57.8
44.0 - 71.5
-
83.3
66.1 - 66.1
-
68.3
45.3 - 70.2
CSC<6/60
-
47.4
34.7 - 60.2
-
83.3
66.1 - 100.0
-
59.9
35.3 - 59.5
CSC<6/18
-
32.6
22.1 - 43.0
-
46.9
29.5 - 64.4
-
38.3
22.9 - 42.3

Effective cataract surgical coverage (eCSC) (age-sex adjusted)

The RAAB research team did a formal analysis of eCSC with the World Health Organization and the Vision Loss Expert Group in late 2022. eCSC results will be available on the repository in 2023.

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.