Centre for Longitudinal Studies

Appendix 5

NCDS cases where there was an ongoing pregnancy, but data out of
order (i.e. not entered in first slot), or pregnancy was wrongly
bunched with another outcome as an apparent multiple.

055086Z    081002N    436010M    501009P    620087A    910031N

X33020B    X40036J

[Cases 781048S and 986275W had two ‘still pregnant’ entries, presumably indicating
it was already known to be twins. No alteration necessary].

BCS70 cases where there was an ongoing pregnancy, but data out of
order (i.e. not entered in first slot), or pregnancy was wrongly
bunched with another outcome as an apparent multiple.

The following 52 cases had the ongoing pregnancy not entered in the first birth-slot,
and so had to be re-ordered:

The following 7 cases had the data for the ongoing pregnancy correctly entered in the
first slot, but other birth outcomes were wrongly bunched in the same pregnancy (i.e.
in slots 2, 3, ... etc):

01592000    06896024    09516017    13762136    14228000    14381008

16027027

The following five cases had two ‘still pregnant’ entries, presumably indicating it was
already known to be twins, so they were not altered:

00060057    05435004    07406007    10531069    12278025

One ongoing pregnancy was correctly entered in the first slot, with a miscarriage in
slot 2. However, the miscarriage was sufficiently recent for it to be plausible that it
was from the same pregnancy, so this was not altered:
10723098

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