Lee et al. [1] provide extra conversion factors to use when calculating a person's L-dopa equivalent daily dose (LEDD).

A person's LEDD is calculated by adding together the L-dopa equivalent of each of the drugs taken. The table below shows the conversion rates:
100 mg of L-dopa =
130 mg of L-dopa in controlled-release form =
77 mg L-dopa with entacapone =
1 mg pergolide =
1 mg pramipexole =
5 mg ropinirole =
10 mg bromocriptine

Reference
[1] "Daily dose of dopaminergic medications in Parkinson disease: Clinical correlates and a posteriori equation"
1Jee-Young Lee MD, 2Jae Woo Kim MD PhD, 3Won Yong Lee MD PhD, 4Jong-Min Kim
MD PhD, 5Tae-Beom Ahn MD PhD, 6Han-Joon Kim MD, 3Jinwhan Cho MD PhD, 6Beom S
Jeon MD PhD
Neurology Asia 2010; 15(2) : 137 – 143
http://www.neurology-asia.org/articles/20102_137.pdf

John