National Income Dynamics Study 2017, Wave 5 Secure Data
South Africa, 2017
Southern Africa Labour and Development Research Unit,
Created on
August 29, 2018
Last modified
August 29, 2018
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c2_6_y2 - Date of birth (year) of child 2 (w5_a_bhdob_y2)
Data file: adult_w5_secure_v1.0.0
Overview
Valid:
8241
Invalid:
21869
Type:
discrete
Decimal:
0
loc_width:
4
var_range:
1940 - 9999
var_format:
numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1940 | 1 |
0%
|
|
| 1943 | 3 |
0%
|
|
| 1945 | 1 |
0%
|
|
| 1946 | 1 |
0%
|
|
| 1948 | 3 |
0%
|
|
| 1949 | 1 |
0%
|
|
| 1950 | 3 |
0%
|
|
| 1951 | 1 |
0%
|
|
| 1952 | 4 |
0%
|
|
| 1953 | 5 |
0.1%
|
|
| 1954 | 9 |
0.1%
|
|
| 1955 | 14 |
0.2%
|
|
| 1956 | 14 |
0.2%
|
|
| 1957 | 12 |
0.1%
|
|
| 1958 | 17 |
0.2%
|
|
| 1959 | 15 |
0.2%
|
|
| 1960 | 31 |
0.4%
|
|
| 1961 | 31 |
0.4%
|
|
| 1962 | 45 |
0.5%
|
|
| 1963 | 41 |
0.5%
|
|
| 1964 | 49 |
0.6%
|
|
| 1965 | 47 |
0.6%
|
|
| 1966 | 46 |
0.6%
|
|
| 1967 | 53 |
0.6%
|
|
| 1968 | 78 |
0.9%
|
|
| 1969 | 73 |
0.9%
|
|
| 1970 | 93 |
1.1%
|
|
| 1971 | 72 |
0.9%
|
|
| 1972 | 96 |
1.2%
|
|
| 1973 | 94 |
1.1%
|
|
| 1974 | 89 |
1.1%
|
|
| 1975 | 128 |
1.6%
|
|
| 1976 | 97 |
1.2%
|
|
| 1977 | 118 |
1.4%
|
|
| 1978 | 125 |
1.5%
|
|
| 1979 | 126 |
1.5%
|
|
| 1980 | 145 |
1.8%
|
|
| 1981 | 119 |
1.4%
|
|
| 1982 | 151 |
1.8%
|
|
| 1983 | 137 |
1.7%
|
|
| 1984 | 144 |
1.7%
|
|
| 1985 | 147 |
1.8%
|
|
| 1986 | 169 |
2.1%
|
|
| 1987 | 150 |
1.8%
|
|
| 1988 | 151 |
1.8%
|
|
| 1989 | 133 |
1.6%
|
|
| 1990 | 144 |
1.7%
|
|
| 1991 | 154 |
1.9%
|
|
| 1992 | 124 |
1.5%
|
|
| 1993 | 121 |
1.5%
|
|
| 1994 | 125 |
1.5%
|
|
| 1995 | 119 |
1.4%
|
|
| 1996 | 146 |
1.8%
|
|
| 1997 | 148 |
1.8%
|
|
| 1998 | 145 |
1.8%
|
|
| 1999 | 145 |
1.8%
|
|
| 2000 | 159 |
1.9%
|
|
| 2001 | 151 |
1.8%
|
|
| 2002 | 140 |
1.7%
|
|
| 2003 | 166 |
2%
|
|
| 2004 | 192 |
2.3%
|
|
| 2005 | 185 |
2.2%
|
|
| 2006 | 187 |
2.3%
|
|
| 2007 | 206 |
2.5%
|
|
| 2008 | 235 |
2.9%
|
|
| 2009 | 230 |
2.8%
|
|
| 2010 | 224 |
2.7%
|
|
| 2011 | 227 |
2.8%
|
|
| 2012 | 205 |
2.5%
|
|
| 2013 | 253 |
3.1%
|
|
| 2014 | 252 |
3.1%
|
|
| 2015 | 258 |
3.1%
|
|
| 2016 | 247 |
3%
|
|
| 2017 | 106 |
1.3%
|
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 4 |
0%
|
| 9999 | Don't know | 161 |
2%
|
| Sysmiss | 21869 |
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.