Proportions of First-line Drugs Prescribed Before and After Cabergoline and Pergolide Product Label Revisions for Valvulopathy Risk.

“Pre-revision”: between July 2005 and March 2007. “Post-revision”: between April 2007 and December 2010.
aAge when a first-line drug was prescribed.
bOther anticholinergics include piroheptine, profenamine, and mazaticol.
Pearson's chi-square test was used to calculate P-values unless otherwise noted (P<0.002 after Bonferroni correction).
cFisher's exact test.