National Income Dynamics Study 2012, Wave 3
South Africa, 2012
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Reference ID
zaf-saldru-nids-2012-v3.0.0
Producer(s)
Southern Africa Labour and Development Research Unit,
Collections
Created on
Nov 24, 2013
Last modified
Jul 18, 2023
Page views
440868
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d6 - Mother's year of birth (w3_a_mthbrthy)
Data file: Adult_W3_Anon_V3.0.0
Overview
Valid:
13379
Invalid:
9078
Type:
Discrete
Decimal:
0
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%
|
|
| 1892 | 1 |
0%
|
|
| 1894 | 2 |
0%
|
|
| 1895 | 1 |
0%
|
|
| 1897 | 1 |
0%
|
|
| 1898 | 1 |
0%
|
|
| 1899 | 2 |
0%
|
|
| 1900 | 2 |
0%
|
|
| 1901 | 9 |
0%
|
|
| 1902 | 10 |
0%
|
|
| 1903 | 10 |
0%
|
|
| 1904 | 8 |
0%
|
|
| 1905 | 9 |
0%
|
|
| 1906 | 10 |
0%
|
|
| 1907 | 8 |
0%
|
|
| 1908 | 7 |
0%
|
|
| 1909 | 5 |
0%
|
|
| 1910 | 40 |
0.2%
|
|
| 1911 | 20 |
0.1%
|
|
| 1912 | 29 |
0.1%
|
|
| 1913 | 15 |
0.1%
|
|
| 1914 | 41 |
0.2%
|
|
| 1915 | 20 |
0.1%
|
|
| 1916 | 27 |
0.1%
|
|
| 1917 | 28 |
0.1%
|
|
| 1918 | 91 |
0.4%
|
|
| 1919 | 29 |
0.1%
|
|
| 1920 | 79 |
0.4%
|
|
| 1921 | 46 |
0.2%
|
|
| 1922 | 44 |
0.2%
|
|
| 1923 | 58 |
0.3%
|
|
| 1924 | 43 |
0.2%
|
|
| 1925 | 84 |
0.4%
|
|
| 1926 | 66 |
0.3%
|
|
| 1927 | 65 |
0.3%
|
|
| 1928 | 76 |
0.3%
|
|
| 1929 | 81 |
0.4%
|
|
| 1930 | 139 |
0.6%
|
|
| 1931 | 58 |
0.3%
|
|
| 1932 | 134 |
0.6%
|
|
| 1933 | 124 |
0.6%
|
|
| 1934 | 86 |
0.4%
|
|
| 1935 | 134 |
0.6%
|
|
| 1936 | 129 |
0.6%
|
|
| 1937 | 96 |
0.4%
|
|
| 1938 | 137 |
0.6%
|
|
| 1939 | 102 |
0.5%
|
|
| 1940 | 174 |
0.8%
|
|
| 1941 | 54 |
0.2%
|
|
| 1942 | 145 |
0.6%
|
|
| 1943 | 88 |
0.4%
|
|
| 1944 | 109 |
0.5%
|
|
| 1945 | 136 |
0.6%
|
|
| 1946 | 106 |
0.5%
|
|
| 1947 | 122 |
0.5%
|
|
| 1948 | 138 |
0.6%
|
|
| 1949 | 123 |
0.5%
|
|
| 1950 | 152 |
0.7%
|
|
| 1951 | 80 |
0.4%
|
|
| 1952 | 174 |
0.8%
|
|
| 1953 | 157 |
0.7%
|
|
| 1954 | 180 |
0.8%
|
|
| 1955 | 170 |
0.8%
|
|
| 1956 | 173 |
0.8%
|
|
| 1957 | 143 |
0.6%
|
|
| 1958 | 154 |
0.7%
|
|
| 1959 | 125 |
0.6%
|
|
| 1960 | 145 |
0.6%
|
|
| 1961 | 112 |
0.5%
|
|
| 1962 | 168 |
0.7%
|
|
| 1963 | 138 |
0.6%
|
|
| 1964 | 176 |
0.8%
|
|
| 1965 | 149 |
0.7%
|
|
| 1966 | 129 |
0.6%
|
|
| 1967 | 114 |
0.5%
|
|
| 1968 | 152 |
0.7%
|
|
| 1969 | 130 |
0.6%
|
|
| 1970 | 108 |
0.5%
|
|
| 1971 | 90 |
0.4%
|
|
| 1972 | 107 |
0.5%
|
|
| 1973 | 95 |
0.4%
|
|
| 1974 | 72 |
0.3%
|
|
| 1975 | 72 |
0.3%
|
|
| 1976 | 75 |
0.3%
|
|
| 1977 | 47 |
0.2%
|
|
| 1978 | 20 |
0.1%
|
|
| 1979 | 26 |
0.1%
|
|
| 1980 | 10 |
0%
|
|
| 1981 | 6 |
0%
|
|
| 1982 | 6 |
0%
|
|
| 1984 | 1 |
0%
|
|
| 1989 | 1 |
0%
|
|
| 3333 | Missing | 44 |
0.2%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 21 |
0.1%
|
| 9999 | Don't know | 6243 |
27.8%
|
| Sysmiss | 9078 |
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.