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
397857
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d6 - Mother's year of birth (w2_a_mthbrthy)
Data file: Adult_W2_Anon_V4.0.0
Overview
Valid:
11856
Invalid:
10018
Type:
Discrete
Decimal:
0
Width:
4
Range:
1888 - 9999
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1888 | 1 |
0%
|
|
| 1889 | 2 |
0%
|
|
| 1890 | 1 |
0%
|
|
| 1891 | 1 |
0%
|
|
| 1894 | 1 |
0%
|
|
| 1896 | 1 |
0%
|
|
| 1897 | 1 |
0%
|
|
| 1899 | 1 |
0%
|
|
| 1900 | 1 |
0%
|
|
| 1901 | 4 |
0%
|
|
| 1902 | 10 |
0%
|
|
| 1903 | 5 |
0%
|
|
| 1904 | 7 |
0%
|
|
| 1905 | 6 |
0%
|
|
| 1906 | 7 |
0%
|
|
| 1907 | 8 |
0%
|
|
| 1908 | 10 |
0%
|
|
| 1909 | 9 |
0%
|
|
| 1910 | 29 |
0.1%
|
|
| 1911 | 8 |
0%
|
|
| 1912 | 19 |
0.1%
|
|
| 1913 | 14 |
0.1%
|
|
| 1914 | 35 |
0.2%
|
|
| 1915 | 11 |
0.1%
|
|
| 1916 | 17 |
0.1%
|
|
| 1917 | 23 |
0.1%
|
|
| 1918 | 59 |
0.3%
|
|
| 1919 | 21 |
0.1%
|
|
| 1920 | 52 |
0.2%
|
|
| 1921 | 39 |
0.2%
|
|
| 1922 | 36 |
0.2%
|
|
| 1923 | 35 |
0.2%
|
|
| 1924 | 38 |
0.2%
|
|
| 1925 | 62 |
0.3%
|
|
| 1926 | 46 |
0.2%
|
|
| 1927 | 44 |
0.2%
|
|
| 1928 | 59 |
0.3%
|
|
| 1929 | 57 |
0.3%
|
|
| 1930 | 77 |
0.4%
|
|
| 1931 | 33 |
0.2%
|
|
| 1932 | 93 |
0.4%
|
|
| 1933 | 94 |
0.4%
|
|
| 1934 | 65 |
0.3%
|
|
| 1935 | 79 |
0.4%
|
|
| 1936 | 98 |
0.4%
|
|
| 1937 | 65 |
0.3%
|
|
| 1938 | 70 |
0.3%
|
|
| 1939 | 86 |
0.4%
|
|
| 1940 | 121 |
0.6%
|
|
| 1941 | 51 |
0.2%
|
|
| 1942 | 104 |
0.5%
|
|
| 1943 | 59 |
0.3%
|
|
| 1944 | 73 |
0.3%
|
|
| 1945 | 94 |
0.4%
|
|
| 1946 | 66 |
0.3%
|
|
| 1947 | 80 |
0.4%
|
|
| 1948 | 95 |
0.4%
|
|
| 1949 | 75 |
0.3%
|
|
| 1950 | 111 |
0.5%
|
|
| 1951 | 72 |
0.3%
|
|
| 1952 | 123 |
0.6%
|
|
| 1953 | 95 |
0.4%
|
|
| 1954 | 130 |
0.6%
|
|
| 1955 | 115 |
0.5%
|
|
| 1956 | 105 |
0.5%
|
|
| 1957 | 75 |
0.3%
|
|
| 1958 | 113 |
0.5%
|
|
| 1959 | 71 |
0.3%
|
|
| 1960 | 97 |
0.4%
|
|
| 1961 | 70 |
0.3%
|
|
| 1962 | 97 |
0.4%
|
|
| 1963 | 91 |
0.4%
|
|
| 1964 | 111 |
0.5%
|
|
| 1965 | 86 |
0.4%
|
|
| 1966 | 81 |
0.4%
|
|
| 1967 | 51 |
0.2%
|
|
| 1968 | 78 |
0.4%
|
|
| 1969 | 70 |
0.3%
|
|
| 1970 | 66 |
0.3%
|
|
| 1971 | 39 |
0.2%
|
|
| 1972 | 55 |
0.3%
|
|
| 1973 | 41 |
0.2%
|
|
| 1974 | 31 |
0.1%
|
|
| 1975 | 23 |
0.1%
|
|
| 1976 | 19 |
0.1%
|
|
| 1977 | 16 |
0.1%
|
|
| 1978 | 9 |
0%
|
|
| 1979 | 6 |
0%
|
|
| 1980 | 1 |
0%
|
|
| 1981 | 1 |
0%
|
|
| 1982 | 3 |
0%
|
|
| 1985 | 1 |
0%
|
|
| 1993 | 2 |
0%
|
|
| 1994 | 1 |
0%
|
|
| 2222 | Not asked in Phase 2 | 729 |
3.3%
|
| 3333 | Missing | 150 |
0.7%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 140 |
0.6%
|
| 9999 | Don't know | 6323 |
28.9%
|
| Sysmiss | 10018 |
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.