National Income Dynamics Study 2014
South Africa, 2014 - 2015
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Reference ID
ZAF_2014_NIDS-W4_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 (w4_a_mthbrthy)
Data file: Adult_W4_Anon_V1.0
Overview
Valid:
14825
Invalid:
11994
Minimum:
-9
Maximum:
9999
Type:
Discrete
Decimal:
0
Start:
847
End:
850
Width:
4
Range:
-9 - 9999
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| -9 | 5 |
0%
|
|
| -3 | 7 |
0%
|
|
| 19 | 1 |
0%
|
|
| 1884 | 1 |
0%
|
|
| 1888 | 1 |
0%
|
|
| 1890 | 1 |
0%
|
|
| 1892 | 1 |
0%
|
|
| 1896 | 3 |
0%
|
|
| 1898 | 1 |
0%
|
|
| 1899 | 1 |
0%
|
|
| 1900 | 6 |
0%
|
|
| 1901 | 6 |
0%
|
|
| 1902 | 4 |
0%
|
|
| 1903 | 4 |
0%
|
|
| 1904 | 5 |
0%
|
|
| 1905 | 8 |
0.1%
|
|
| 1906 | 5 |
0%
|
|
| 1907 | 9 |
0.1%
|
|
| 1908 | 7 |
0%
|
|
| 1909 | 9 |
0.1%
|
|
| 1910 | 27 |
0.2%
|
|
| 1911 | 17 |
0.1%
|
|
| 1912 | 22 |
0.1%
|
|
| 1913 | 14 |
0.1%
|
|
| 1914 | 44 |
0.3%
|
|
| 1915 | 15 |
0.1%
|
|
| 1916 | 24 |
0.2%
|
|
| 1917 | 27 |
0.2%
|
|
| 1918 | 86 |
0.6%
|
|
| 1919 | 21 |
0.1%
|
|
| 1920 | 65 |
0.4%
|
|
| 1921 | 50 |
0.3%
|
|
| 1922 | 41 |
0.3%
|
|
| 1923 | 52 |
0.4%
|
|
| 1924 | 44 |
0.3%
|
|
| 1925 | 90 |
0.6%
|
|
| 1926 | 72 |
0.5%
|
|
| 1927 | 76 |
0.5%
|
|
| 1928 | 91 |
0.6%
|
|
| 1929 | 74 |
0.5%
|
|
| 1930 | 128 |
0.9%
|
|
| 1931 | 66 |
0.4%
|
|
| 1932 | 131 |
0.9%
|
|
| 1933 | 136 |
0.9%
|
|
| 1934 | 101 |
0.7%
|
|
| 1935 | 139 |
0.9%
|
|
| 1936 | 144 |
1%
|
|
| 1937 | 115 |
0.8%
|
|
| 1938 | 135 |
0.9%
|
|
| 1939 | 130 |
0.9%
|
|
| 1940 | 212 |
1.4%
|
|
| 1941 | 75 |
0.5%
|
|
| 1942 | 177 |
1.2%
|
|
| 1943 | 109 |
0.7%
|
|
| 1944 | 144 |
1%
|
|
| 1945 | 148 |
1%
|
|
| 1946 | 129 |
0.9%
|
|
| 1947 | 138 |
0.9%
|
|
| 1948 | 181 |
1.2%
|
|
| 1949 | 137 |
0.9%
|
|
| 1950 | 201 |
1.4%
|
|
| 1951 | 131 |
0.9%
|
|
| 1952 | 234 |
1.6%
|
|
| 1953 | 217 |
1.5%
|
|
| 1954 | 211 |
1.4%
|
|
| 1955 | 228 |
1.5%
|
|
| 1956 | 226 |
1.5%
|
|
| 1957 | 205 |
1.4%
|
|
| 1958 | 207 |
1.4%
|
|
| 1959 | 197 |
1.3%
|
|
| 1960 | 186 |
1.3%
|
|
| 1961 | 155 |
1%
|
|
| 1962 | 249 |
1.7%
|
|
| 1963 | 239 |
1.6%
|
|
| 1964 | 238 |
1.6%
|
|
| 1965 | 258 |
1.7%
|
|
| 1966 | 203 |
1.4%
|
|
| 1967 | 185 |
1.2%
|
|
| 1968 | 215 |
1.5%
|
|
| 1969 | 212 |
1.4%
|
|
| 1970 | 163 |
1.1%
|
|
| 1971 | 116 |
0.8%
|
|
| 1972 | 172 |
1.2%
|
|
| 1973 | 136 |
0.9%
|
|
| 1974 | 132 |
0.9%
|
|
| 1975 | 137 |
0.9%
|
|
| 1976 | 156 |
1.1%
|
|
| 1977 | 106 |
0.7%
|
|
| 1978 | 68 |
0.5%
|
|
| 1979 | 62 |
0.4%
|
|
| 1980 | 51 |
0.3%
|
|
| 1981 | 43 |
0.3%
|
|
| 1982 | 44 |
0.3%
|
|
| 1983 | 15 |
0.1%
|
|
| 1984 | 6 |
0%
|
|
| 1985 | 2 |
0%
|
|
| 3333 | Missing | 10 |
0.1%
|
| 5555 | Not Applicable | 9 |
0.1%
|
| 8888 | Refused | 5 |
0%
|
| 9999 | Don't Know | 5483 |
37%
|
| Sysmiss | 11994 |
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.