Do 'pro-life' Christians ever . . .

[Fidel_Castronaut]

^^ no, it's nothing of the sort. The above implies only what is stated. It elucidates no further on personal circumstances, or on what other birth control methods were used and when, and how that relates to pregnancies. Maybe a % were relying purely on abortion for birth control, however I doubt that is the case for the majority (no evidence of that in your citation, either).

Whilet the study talks to several women, 1000+ is hardly a sample size which would lend any credibility to your claim in any case.

You are suffering from confirmation bias on your own pre-held beliefs. The above is not a citation of your claim. Sorry.