First (biological) child birth month
This variable is only available in the Special Licence (SN 6931) and Secure Access (SN 6676) datasets.
Month of birth of first child. Special Licence release (SN6931) only.
See CH1BY_DV ANYCHILD_DV
Datafile
Index terms
Derived variable note:
Month of birth of first child. Special Licence release (SN6931) only.
See CH1BY_DV ANYCHILD_DV
Derived variable note:
Uses files W_CH1BM on data file W_INDRESP
W_LCHDOBM on datafile W_NATCHILD
W_MNPID WFNPID W_BIRTHM on W_INDALL
W_LCHBM on datafile W_NEWBORN
BW_CH1BM on datafile BW_INDRESP/
| Value label | Value | Absolute frequency | Relative frequency |
|---|---|---|---|
| missing | -9 | 90323 | 53.64% |
| has child, date missing | 0 | 8046 | 4.78% |
| january | 1 | 6074 | 3.61% |
| february | 2 | 5290 | 3.14% |
| march | 3 | 5832 | 3.46% |
| april | 4 | 5426 | 3.22% |
| may | 5 | 5925 | 3.52% |
| june | 6 | 6771 | 4.02% |
| july | 7 | 5894 | 3.5% |
| august | 8 | 5915 | 3.51% |
| september | 9 | 5770 | 3.43% |
| october | 10 | 5997 | 3.56% |
| november | 11 | 5516 | 3.28% |
| december | 12 | 5598 | 3.32% |
| Total | 168377 | 100.0% |
| Mean | Number Missing | Min | Max | Std Dev | N |
|---|---|---|---|---|---|
| 5.82 | 90323 | 0 | 12.0 | 3.79 | 78054 |
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