This wasn't limited to the catholic church but was a symptom of Irish society at the time, the Irish church merely reflected Irish cultural norms for the time.
It seems now the letter the pope was meant to issue to the victims is now postponed due to
"similar scandals which have come to light in his own country, Germany - including one in the very town where he taught at the university and where his brother was choirmaster of a famous boys' choir."
I can only see one common denominator here. The Roman catholic church.