National Income Dynamics Study 2008, Wave 1 Secure Data
South Africa, 2008
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Reference ID
zaf-saldru-nidssd-2008-v7.0.0
Producer(s)
Southern Africa Labour and Development Research Unit
Collections
Created on
Aug 24, 2018
Last modified
Oct 18, 2023
Page views
313967
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2217
j20 - Year in which respondent's vision was last tested (w1_a_hlvistest)
Data file: Adult_W1_Secure_V7.0.0
Overview
Valid:
15631
Invalid:
1241
Type:
Discrete
Decimal:
0
loc_start_pos:
4762
loc_end_pos:
4765
Width:
4
Range:
1960 - 9999
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1960 | 1 |
0%
|
|
| 1965 | 1 |
0%
|
|
| 1968 | 2 |
0%
|
|
| 1969 | 1 |
0%
|
|
| 1971 | 1 |
0%
|
|
| 1973 | 1 |
0%
|
|
| 1976 | 2 |
0%
|
|
| 1977 | 1 |
0%
|
|
| 1978 | 1 |
0%
|
|
| 1979 | 2 |
0%
|
|
| 1980 | 5 |
0%
|
|
| 1981 | 1 |
0%
|
|
| 1982 | 3 |
0%
|
|
| 1983 | 4 |
0%
|
|
| 1984 | 4 |
0%
|
|
| 1985 | 4 |
0%
|
|
| 1986 | 4 |
0%
|
|
| 1987 | 4 |
0%
|
|
| 1988 | 6 |
0%
|
|
| 1989 | 7 |
0%
|
|
| 1990 | 13 |
0.1%
|
|
| 1991 | 4 |
0%
|
|
| 1992 | 8 |
0.1%
|
|
| 1993 | 13 |
0.1%
|
|
| 1994 | 17 |
0.1%
|
|
| 1995 | 25 |
0.2%
|
|
| 1996 | 29 |
0.2%
|
|
| 1997 | 26 |
0.2%
|
|
| 1998 | 52 |
0.3%
|
|
| 1999 | 45 |
0.3%
|
|
| 2000 | 67 |
0.4%
|
|
| 2001 | 44 |
0.3%
|
|
| 2002 | 77 |
0.5%
|
|
| 2003 | 145 |
0.9%
|
|
| 2004 | 194 |
1.2%
|
|
| 2005 | 333 |
2.1%
|
|
| 2006 | 628 |
4%
|
|
| 2007 | 1253 |
8%
|
|
| 2008 | 704 |
4.5%
|
|
| 3333 | Missing | 101 |
0.6%
|
| 5555 | Not Applicable | 1762 |
11.3%
|
| 7777 | Never | 10009 |
64%
|
| 8888 | Refused | 5 |
0%
|
| 9999 | Don't know | 22 |
0.1%
|
| Sysmiss | 1241 |
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.