National Income Dynamics Study 2012
South Africa, 2012
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Reference ID
ZAF_2012_NIDS-W3_v01_EN_M_v01_A_OCS
Producer(s)
Southern Africa Labour and Development Research Unit
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Metadata
Created on
Oct 07, 2020
Last modified
Nov 03, 2020
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d6 - Mother's year of birth (w3_a_mthbrthy)
Data file: Adult_W3_Anon_V2.1
Overview
Valid:
13406
Invalid:
9060
Minimum:
1870
Maximum:
9999
Type:
Discrete
Decimal:
0
Start:
569
End:
572
Width:
4
Range:
1870 - 9999
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1870 | 1 |
0%
|
|
| 1876 | 1 |
0%
|
|
| 1880 | 1 |
0%
|
|
| 1881 | 1 |
0%
|
|
| 1882 | 1 |
0%
|
|
| 1888 | 1 |
0%
|
|
| 1889 | 2 |
0%
|
|
| 1890 | 3 |
0%
|
|
| 1891 | 1 |
0%
|
|
| 1894 | 2 |
0%
|
|
| 1895 | 1 |
0%
|
|
| 1897 | 1 |
0%
|
|
| 1898 | 1 |
0%
|
|
| 1899 | 2 |
0%
|
|
| 1900 | 2 |
0%
|
|
| 1901 | 9 |
0.1%
|
|
| 1902 | 9 |
0.1%
|
|
| 1903 | 10 |
0.1%
|
|
| 1904 | 7 |
0.1%
|
|
| 1905 | 9 |
0.1%
|
|
| 1906 | 10 |
0.1%
|
|
| 1907 | 8 |
0.1%
|
|
| 1908 | 8 |
0.1%
|
|
| 1909 | 6 |
0%
|
|
| 1910 | 42 |
0.3%
|
|
| 1911 | 18 |
0.1%
|
|
| 1912 | 28 |
0.2%
|
|
| 1913 | 17 |
0.1%
|
|
| 1914 | 40 |
0.3%
|
|
| 1915 | 23 |
0.2%
|
|
| 1916 | 26 |
0.2%
|
|
| 1917 | 28 |
0.2%
|
|
| 1918 | 89 |
0.7%
|
|
| 1919 | 27 |
0.2%
|
|
| 1920 | 79 |
0.6%
|
|
| 1921 | 43 |
0.3%
|
|
| 1922 | 45 |
0.3%
|
|
| 1923 | 58 |
0.4%
|
|
| 1924 | 45 |
0.3%
|
|
| 1925 | 81 |
0.6%
|
|
| 1926 | 62 |
0.5%
|
|
| 1927 | 61 |
0.5%
|
|
| 1928 | 80 |
0.6%
|
|
| 1929 | 80 |
0.6%
|
|
| 1930 | 138 |
1%
|
|
| 1931 | 59 |
0.4%
|
|
| 1932 | 136 |
1%
|
|
| 1933 | 124 |
0.9%
|
|
| 1934 | 84 |
0.6%
|
|
| 1935 | 129 |
1%
|
|
| 1936 | 127 |
0.9%
|
|
| 1937 | 93 |
0.7%
|
|
| 1938 | 138 |
1%
|
|
| 1939 | 98 |
0.7%
|
|
| 1940 | 168 |
1.3%
|
|
| 1941 | 51 |
0.4%
|
|
| 1942 | 142 |
1.1%
|
|
| 1943 | 88 |
0.7%
|
|
| 1944 | 108 |
0.8%
|
|
| 1945 | 134 |
1%
|
|
| 1946 | 105 |
0.8%
|
|
| 1947 | 124 |
0.9%
|
|
| 1948 | 133 |
1%
|
|
| 1949 | 123 |
0.9%
|
|
| 1950 | 156 |
1.2%
|
|
| 1951 | 80 |
0.6%
|
|
| 1952 | 178 |
1.3%
|
|
| 1953 | 150 |
1.1%
|
|
| 1954 | 179 |
1.3%
|
|
| 1955 | 172 |
1.3%
|
|
| 1956 | 174 |
1.3%
|
|
| 1957 | 144 |
1.1%
|
|
| 1958 | 147 |
1.1%
|
|
| 1959 | 125 |
0.9%
|
|
| 1960 | 138 |
1%
|
|
| 1961 | 109 |
0.8%
|
|
| 1962 | 169 |
1.3%
|
|
| 1963 | 137 |
1%
|
|
| 1964 | 166 |
1.2%
|
|
| 1965 | 146 |
1.1%
|
|
| 1966 | 129 |
1%
|
|
| 1967 | 113 |
0.8%
|
|
| 1968 | 145 |
1.1%
|
|
| 1969 | 131 |
1%
|
|
| 1970 | 107 |
0.8%
|
|
| 1971 | 88 |
0.7%
|
|
| 1972 | 107 |
0.8%
|
|
| 1973 | 93 |
0.7%
|
|
| 1974 | 66 |
0.5%
|
|
| 1975 | 70 |
0.5%
|
|
| 1976 | 72 |
0.5%
|
|
| 1977 | 45 |
0.3%
|
|
| 1978 | 17 |
0.1%
|
|
| 1979 | 28 |
0.2%
|
|
| 1980 | 9 |
0.1%
|
|
| 1981 | 2 |
0%
|
|
| 1982 | 5 |
0%
|
|
| 1983 | 1 |
0%
|
|
| 1989 | 1 |
0%
|
|
| 3333 | Missing | 46 |
0.3%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 24 |
0.2%
|
| 9999 | Don't know | 6366 |
47.5%
|
| Sysmiss | 9060 |
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.