Russell Chapman wrote:
>
> Deborah Harrell wrote:
>
> >In the single-check group, there was a total
> >of 13 unintended pregnancies at the end of the first
> >12 cycles of study participation, giving an unintended
> >pregnancy rate of 8.5% (SE 2.52%), a drop-out rate for
> >difficulties or dissatisfaction of 3.0% (SE 1.76%) and
> >a lost-to-follow-up rate of 23.4% (SE 4.35%). No
> >pregnancy was observed in women over 40 years of age.
> >Most pregnancies occurred because of deliberate
> >unprotected intercourse in the fertile phase ('user
> >failure')."
> >
> Sorry for sounding stupid here, but how is deliberate unprotected
> intercourse different to a drop-out for difficulties or dissatisfaction?
> Isn't both a case of them saying, ah stuff it, this is too restrictive,
> I'm going to go ahead and do it anyway?
I'd guess that the "deliberate unprotected intercourse" is by people
still continuing in the study, and the drop-outs are people who announce
that they're no longer interested in continuing in the study but want to
go to some other form of contraception before the 12 cycles they'd
originally agreed to. Just a guess, though.
Julia
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