National Income Dynamics Study 2010-2011, Wave 2 Secure Data
South Africa, 2010 - 2011
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Reference ID
zaf-saldru-nidssd-2010-2011-v4.0.0
Producer(s)
Southern Africa Labour and Development Research Unit,
Collections
Created on
Aug 24, 2018
Last modified
Oct 18, 2023
Page views
284450
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e13 - Mother's year of birth (w2_c_mthbrthy)
Data file: Child_W2_Secure_V4.0.0
Overview
Valid:
2699
Invalid:
8594
Type:
Discrete
Decimal:
0
loc_start_pos:
1007
loc_end_pos:
1010
Width:
4
Range:
1941 - 9999
Format:
Numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1941 | 1 |
0%
|
|
| 1948 | 1 |
0%
|
|
| 1949 | 1 |
0%
|
|
| 1951 | 1 |
0%
|
|
| 1952 | 1 |
0%
|
|
| 1953 | 1 |
0%
|
|
| 1954 | 5 |
0.2%
|
|
| 1955 | 7 |
0.3%
|
|
| 1956 | 3 |
0.1%
|
|
| 1957 | 4 |
0.1%
|
|
| 1958 | 4 |
0.1%
|
|
| 1959 | 8 |
0.3%
|
|
| 1960 | 6 |
0.2%
|
|
| 1961 | 4 |
0.1%
|
|
| 1962 | 10 |
0.4%
|
|
| 1963 | 14 |
0.5%
|
|
| 1964 | 10 |
0.4%
|
|
| 1965 | 13 |
0.5%
|
|
| 1966 | 21 |
0.8%
|
|
| 1967 | 25 |
0.9%
|
|
| 1968 | 33 |
1.2%
|
|
| 1969 | 36 |
1.3%
|
|
| 1970 | 54 |
2%
|
|
| 1971 | 29 |
1.1%
|
|
| 1972 | 55 |
2%
|
|
| 1973 | 60 |
2.2%
|
|
| 1974 | 52 |
1.9%
|
|
| 1975 | 71 |
2.6%
|
|
| 1976 | 80 |
3%
|
|
| 1977 | 71 |
2.6%
|
|
| 1978 | 81 |
3%
|
|
| 1979 | 79 |
2.9%
|
|
| 1980 | 63 |
2.3%
|
|
| 1981 | 68 |
2.5%
|
|
| 1982 | 89 |
3.3%
|
|
| 1983 | 77 |
2.9%
|
|
| 1984 | 49 |
1.8%
|
|
| 1985 | 50 |
1.9%
|
|
| 1986 | 47 |
1.7%
|
|
| 1987 | 29 |
1.1%
|
|
| 1988 | 17 |
0.6%
|
|
| 1989 | 27 |
1%
|
|
| 1990 | 20 |
0.7%
|
|
| 1991 | 5 |
0.2%
|
|
| 1992 | 5 |
0.2%
|
|
| 1994 | 2 |
0.1%
|
|
| 2222 | Not asked in Phase 2 | 0 |
0%
|
| 3333 | Missing | 80 |
3%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 25 |
0.9%
|
| 9999 | Don't know | 1205 |
44.6%
|
| Sysmiss | 8594 |
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.