National Income Dynamics Study 2010-2011, Wave 2
South Africa, 2010 - 2011
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Reference ID
zaf-saldru-nids-2010-2011-v4.0.0
Producer(s)
Southern Africa Labour and Development Research Unit,
Collections
Created on
Nov 24, 2013
Last modified
Jul 18, 2023
Page views
456977
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d3 - Biological mother's year of death (w2_a_mthdthy)
Data file: Adult_W2_Anon_V4.0.0
Overview
Valid:
7439
Invalid:
14435
Type:
Discrete
Decimal:
0
loc_start_pos:
575
loc_end_pos:
578
Width:
4
Range:
1929 - 9999
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1929 | 2 |
0%
|
|
| 1933 | 1 |
0%
|
|
| 1935 | 2 |
0%
|
|
| 1937 | 1 |
0%
|
|
| 1942 | 2 |
0%
|
|
| 1944 | 1 |
0%
|
|
| 1946 | 1 |
0%
|
|
| 1947 | 4 |
0.1%
|
|
| 1948 | 3 |
0%
|
|
| 1950 | 5 |
0.1%
|
|
| 1951 | 2 |
0%
|
|
| 1952 | 4 |
0.1%
|
|
| 1953 | 2 |
0%
|
|
| 1954 | 3 |
0%
|
|
| 1955 | 3 |
0%
|
|
| 1956 | 3 |
0%
|
|
| 1958 | 3 |
0%
|
|
| 1959 | 6 |
0.1%
|
|
| 1960 | 12 |
0.2%
|
|
| 1961 | 4 |
0.1%
|
|
| 1962 | 5 |
0.1%
|
|
| 1963 | 2 |
0%
|
|
| 1964 | 7 |
0.1%
|
|
| 1965 | 11 |
0.1%
|
|
| 1966 | 8 |
0.1%
|
|
| 1967 | 6 |
0.1%
|
|
| 1968 | 8 |
0.1%
|
|
| 1969 | 9 |
0.1%
|
|
| 1970 | 19 |
0.3%
|
|
| 1971 | 6 |
0.1%
|
|
| 1972 | 14 |
0.2%
|
|
| 1973 | 13 |
0.2%
|
|
| 1974 | 15 |
0.2%
|
|
| 1975 | 14 |
0.2%
|
|
| 1976 | 22 |
0.3%
|
|
| 1977 | 18 |
0.2%
|
|
| 1978 | 24 |
0.3%
|
|
| 1979 | 24 |
0.3%
|
|
| 1980 | 38 |
0.5%
|
|
| 1981 | 17 |
0.2%
|
|
| 1982 | 27 |
0.4%
|
|
| 1983 | 34 |
0.5%
|
|
| 1984 | 32 |
0.4%
|
|
| 1985 | 36 |
0.5%
|
|
| 1986 | 34 |
0.5%
|
|
| 1987 | 46 |
0.6%
|
|
| 1988 | 59 |
0.8%
|
|
| 1989 | 51 |
0.7%
|
|
| 1990 | 62 |
0.8%
|
|
| 1991 | 37 |
0.5%
|
|
| 1992 | 54 |
0.7%
|
|
| 1993 | 59 |
0.8%
|
|
| 1994 | 70 |
0.9%
|
|
| 1995 | 68 |
0.9%
|
|
| 1996 | 78 |
1%
|
|
| 1997 | 73 |
1%
|
|
| 1998 | 130 |
1.7%
|
|
| 1999 | 109 |
1.5%
|
|
| 2000 | 162 |
2.2%
|
|
| 2001 | 123 |
1.7%
|
|
| 2002 | 173 |
2.3%
|
|
| 2003 | 159 |
2.1%
|
|
| 2004 | 184 |
2.5%
|
|
| 2005 | 234 |
3.1%
|
|
| 2006 | 217 |
2.9%
|
|
| 2007 | 226 |
3%
|
|
| 2008 | 238 |
3.2%
|
|
| 2009 | 235 |
3.2%
|
|
| 2010 | 162 |
2.2%
|
|
| 2011 | 1 |
0%
|
|
| 2222 | Not asked in Phase 2 | 732 |
9.8%
|
| 3333 | Missing | 115 |
1.5%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 77 |
1%
|
| 9999 | Don't know | 2998 |
40.3%
|
| Sysmiss | 14435 |
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.