National Income Dynamics Study 2014-2015, Wave 4 Secure Data
South Africa, 2014 - 2015
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Reference ID
zaf-saldru-nidssd-2014-2015-v2.0.0
Producer(s)
Southern Africa Labour and Development Research Unit,
Collections
Created on
Aug 24, 2018
Last modified
Aug 29, 2018
Page views
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j17 - Year in which respondent's vision was last tested (w4_a_hlvistest)
Data file: Adult_W4_Secure_V2.0.0
Overview
Valid:
22740
Invalid:
4064
Type:
Discrete
Decimal:
0
loc_start_pos:
7957
loc_end_pos:
7960
Width:
4
Range:
1955 - 9999
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1955 | 1 |
0%
|
|
| 1968 | 1 |
0%
|
|
| 1980 | 1 |
0%
|
|
| 1983 | 1 |
0%
|
|
| 1988 | 1 |
0%
|
|
| 1989 | 1 |
0%
|
|
| 1990 | 1 |
0%
|
|
| 1991 | 2 |
0%
|
|
| 1994 | 3 |
0%
|
|
| 1995 | 5 |
0%
|
|
| 1996 | 2 |
0%
|
|
| 1997 | 3 |
0%
|
|
| 1998 | 6 |
0%
|
|
| 1999 | 3 |
0%
|
|
| 2000 | 47 |
0.2%
|
|
| 2001 | 24 |
0.1%
|
|
| 2002 | 37 |
0.2%
|
|
| 2003 | 46 |
0.2%
|
|
| 2004 | 54 |
0.2%
|
|
| 2005 | 68 |
0.3%
|
|
| 2006 | 67 |
0.3%
|
|
| 2007 | 113 |
0.5%
|
|
| 2008 | 138 |
0.6%
|
|
| 2009 | 186 |
0.8%
|
|
| 2010 | 328 |
1.4%
|
|
| 2011 | 410 |
1.8%
|
|
| 2012 | 860 |
3.8%
|
|
| 2013 | 1497 |
6.6%
|
|
| 2014 | 2917 |
12.8%
|
|
| 2015 | 403 |
1.8%
|
|
| 3333 | Missing | 16 |
0.1%
|
| 5555 | Can't remember | 2760 |
12.1%
|
| 7777 | Never | 12509 |
55%
|
| 8888 | Refused | 1 |
0%
|
| 9999 | Don't know | 228 |
1%
|
| Sysmiss | 4064 |
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.