National Income Dynamics Study - Coronavirus Rapid Mobile Survey 2020, Wave 1
South Africa, 2020
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Jan 16, 2021
Last modified
Jan 16, 2021
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a9_y - Date of birth (year) (w1_nc_dob_y)
Data file: NIDS-CRAM_Wave1_Anon_V3.0.0.dta
Overview
Valid:
7069
Invalid:
4
Minimum:
1918
Maximum:
9999
Type:
Discrete
Decimal:
0
Start:
26
End:
29
Width:
4
Range:
1918 - 9999
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1918 | 3 |
0%
|
|
| 1923 | 1 |
0%
|
|
| 1925 | 1 |
0%
|
|
| 1928 | 2 |
0%
|
|
| 1929 | 2 |
0%
|
|
| 1930 | 6 |
0.1%
|
|
| 1932 | 8 |
0.1%
|
|
| 1933 | 4 |
0.1%
|
|
| 1934 | 10 |
0.1%
|
|
| 1935 | 6 |
0.1%
|
|
| 1936 | 6 |
0.1%
|
|
| 1937 | 6 |
0.1%
|
|
| 1938 | 5 |
0.1%
|
|
| 1939 | 13 |
0.2%
|
|
| 1940 | 17 |
0.2%
|
|
| 1941 | 15 |
0.2%
|
|
| 1942 | 21 |
0.3%
|
|
| 1943 | 16 |
0.2%
|
|
| 1944 | 31 |
0.4%
|
|
| 1945 | 20 |
0.3%
|
|
| 1946 | 28 |
0.4%
|
|
| 1947 | 28 |
0.4%
|
|
| 1948 | 38 |
0.5%
|
|
| 1949 | 34 |
0.5%
|
|
| 1950 | 34 |
0.5%
|
|
| 1951 | 42 |
0.6%
|
|
| 1952 | 54 |
0.8%
|
|
| 1953 | 43 |
0.6%
|
|
| 1954 | 47 |
0.7%
|
|
| 1955 | 56 |
0.8%
|
|
| 1956 | 54 |
0.8%
|
|
| 1957 | 59 |
0.8%
|
|
| 1958 | 50 |
0.7%
|
|
| 1959 | 49 |
0.7%
|
|
| 1960 | 59 |
0.8%
|
|
| 1961 | 51 |
0.7%
|
|
| 1962 | 79 |
1.1%
|
|
| 1963 | 63 |
0.9%
|
|
| 1964 | 60 |
0.8%
|
|
| 1965 | 58 |
0.8%
|
|
| 1966 | 56 |
0.8%
|
|
| 1967 | 64 |
0.9%
|
|
| 1968 | 62 |
0.9%
|
|
| 1969 | 109 |
1.5%
|
|
| 1970 | 117 |
1.7%
|
|
| 1971 | 127 |
1.8%
|
|
| 1972 | 147 |
2.1%
|
|
| 1973 | 126 |
1.8%
|
|
| 1974 | 145 |
2.1%
|
|
| 1975 | 162 |
2.3%
|
|
| 1976 | 132 |
1.9%
|
|
| 1977 | 151 |
2.1%
|
|
| 1978 | 155 |
2.2%
|
|
| 1979 | 143 |
2%
|
|
| 1980 | 178 |
2.5%
|
|
| 1981 | 155 |
2.2%
|
|
| 1982 | 188 |
2.7%
|
|
| 1983 | 197 |
2.8%
|
|
| 1984 | 196 |
2.8%
|
|
| 1985 | 226 |
3.2%
|
|
| 1986 | 219 |
3.1%
|
|
| 1987 | 240 |
3.4%
|
|
| 1988 | 231 |
3.3%
|
|
| 1989 | 214 |
3%
|
|
| 1990 | 168 |
2.4%
|
|
| 1991 | 157 |
2.2%
|
|
| 1992 | 135 |
1.9%
|
|
| 1993 | 127 |
1.8%
|
|
| 1994 | 150 |
2.1%
|
|
| 1995 | 160 |
2.3%
|
|
| 1996 | 156 |
2.2%
|
|
| 1997 | 169 |
2.4%
|
|
| 1998 | 157 |
2.2%
|
|
| 1999 | 154 |
2.2%
|
|
| 2000 | 164 |
2.3%
|
|
| 2001 | 156 |
2.2%
|
|
| 2002 | 29 |
0.4%
|
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 49 |
0.7%
|
| 9999 | Don't know | 219 |
3.1%
|
| Sysmiss | 4 |
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.