National Income Dynamics Study Secure Data 2010-2011
Wave 2
South Africa, 2010 - 2011
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Reference ID
zaf-saldru-nidssd-2010-2011-v4.0.0
Producer(s)
Southern Africa Labour and Development Research Unit,
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Created on
Aug 24, 2018
Last modified
Feb 19, 2026
Page views
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j18 - Respondent's eyesight strength (w2_a_hlvisdes)
Data file: Adult_W2_Secure_V4.0.0
Overview
Valid:
17626
Invalid:
4248
Type:
Discrete
Decimal:
0
loc_start_pos:
4846
loc_end_pos:
4847
Width:
2
Range:
-9 - 6
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| -9 | -9. Don't know | 5386 |
30.6%
|
| -8 | -8. Refused | 188 |
1.1%
|
| -5 | -5. Not applicable | 0 |
0%
|
| -3 | -3. Missing | 23 |
0.1%
|
| -2 | -2. Not asked in Phase 2 | 732 |
4.2%
|
| 1 | 1. Excellent | 4417 |
25.1%
|
| 2 | 2. Very good | 3007 |
17.1%
|
| 3 | 3. Good | 2301 |
13.1%
|
| 4 | 4. Fair | 713 |
4%
|
| 5 | 5. Poor | 768 |
4.4%
|
| 6 | 6. Blind | 91 |
0.5%
|
| Sysmiss | 4248 |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.