National Income Dynamics Study 2017, Wave 5 Secure Data
South Africa, 2017
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Reference ID
zaf-saldru-nidssd-2017-v1.0.0
Producer(s)
Southern Africa Labour and Development Research Unit,
Collections
Created on
Aug 28, 2018
Last modified
Aug 29, 2018
Page views
255835
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j17 - Year in which respondent's vision was last tested (w5_a_hlvistest)
Data file: adult_w5_secure_v1.0.0
Overview
Valid:
23891
Invalid:
6219
Type:
Discrete
Decimal:
0
Width:
4
Range:
11 - 9999
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 11 | Other (specify) | 0 |
0%
|
| 1977 | 2 |
0%
|
|
| 1979 | 1 |
0%
|
|
| 1985 | 1 |
0%
|
|
| 1986 | 1 |
0%
|
|
| 1989 | 2 |
0%
|
|
| 1992 | 2 |
0%
|
|
| 1993 | 2 |
0%
|
|
| 1994 | 2 |
0%
|
|
| 1995 | 2 |
0%
|
|
| 1996 | 1 |
0%
|
|
| 1997 | 5 |
0%
|
|
| 1998 | 2 |
0%
|
|
| 1999 | 1 |
0%
|
|
| 2000 | 20 |
0.1%
|
|
| 2001 | 8 |
0%
|
|
| 2002 | 20 |
0.1%
|
|
| 2003 | 15 |
0%
|
|
| 2004 | 33 |
0.1%
|
|
| 2005 | 33 |
0.1%
|
|
| 2006 | 43 |
0.1%
|
|
| 2007 | 70 |
0.2%
|
|
| 2008 | 73 |
0.2%
|
|
| 2009 | 113 |
0.4%
|
|
| 2010 | 123 |
0.4%
|
|
| 2011 | 118 |
0.4%
|
|
| 2012 | 218 |
0.7%
|
|
| 2013 | 343 |
1.1%
|
|
| 2014 | 615 |
2%
|
|
| 2015 | 1355 |
4.5%
|
|
| 2016 | 2676 |
8.9%
|
|
| 2017 | 1804 |
6%
|
|
| 3333 | Missing | 13 |
0%
|
| 5555 | Can't remember | 3400 |
11.3%
|
| 7777 | Never | 12535 |
41.6%
|
| 8888 | Refused | 3 |
0%
|
| 9999 | Don't know | 236 |
0.8%
|
| Sysmiss | 6219 |
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.