National Income Dynamics Study 2017, Wave 5 Secure Data
South Africa, 2017
Southern Africa Labour and Development Research Unit,
Created on
August 29, 2018
Last modified
August 29, 2018
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e13 - Mother's year of birth (w5_c_mthbrthy)
Data file: child_w5_secure_v1.0.0
Overview
Valid:
3500
Invalid:
11493
Type:
discrete
Decimal:
0
loc_width:
4
var_range:
1940 - 9999
var_format:
numeric
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1940 | 1 |
0%
|
|
| 1953 | 1 |
0%
|
|
| 1954 | 1 |
0%
|
|
| 1959 | 2 |
0.1%
|
|
| 1960 | 1 |
0%
|
|
| 1961 | 3 |
0.1%
|
|
| 1962 | 8 |
0.2%
|
|
| 1963 | 5 |
0.1%
|
|
| 1964 | 9 |
0.3%
|
|
| 1965 | 15 |
0.4%
|
|
| 1966 | 4 |
0.1%
|
|
| 1967 | 14 |
0.4%
|
|
| 1968 | 24 |
0.7%
|
|
| 1969 | 19 |
0.5%
|
|
| 1970 | 46 |
1.3%
|
|
| 1971 | 27 |
0.8%
|
|
| 1972 | 44 |
1.3%
|
|
| 1973 | 37 |
1.1%
|
|
| 1974 | 38 |
1.1%
|
|
| 1975 | 74 |
2.1%
|
|
| 1976 | 78 |
2.2%
|
|
| 1977 | 65 |
1.9%
|
|
| 1978 | 57 |
1.6%
|
|
| 1979 | 80 |
2.3%
|
|
| 1980 | 102 |
2.9%
|
|
| 1981 | 77 |
2.2%
|
|
| 1982 | 148 |
4.2%
|
|
| 1983 | 136 |
3.9%
|
|
| 1984 | 116 |
3.3%
|
|
| 1985 | 187 |
5.3%
|
|
| 1986 | 123 |
3.5%
|
|
| 1987 | 142 |
4.1%
|
|
| 1988 | 134 |
3.8%
|
|
| 1989 | 108 |
3.1%
|
|
| 1990 | 136 |
3.9%
|
|
| 1991 | 89 |
2.5%
|
|
| 1992 | 75 |
2.1%
|
|
| 1993 | 45 |
1.3%
|
|
| 1994 | 42 |
1.2%
|
|
| 1995 | 38 |
1.1%
|
|
| 1996 | 23 |
0.7%
|
|
| 1997 | 12 |
0.3%
|
|
| 1998 | 11 |
0.3%
|
|
| 1999 | 8 |
0.2%
|
|
| 2000 | 2 |
0.1%
|
|
| 3333 | Missing | 16 |
0.5%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 2 |
0.1%
|
| 9999 | Don't know | 1075 |
30.7%
|
| Sysmiss | 11493 |
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.