1. Key Characteristics and Results for Included Studies.

Study	Number of patients	Mean Hoehn & Yahr	Duration (weeks)	Mean (Max) Ropinirole dose / Mean (Max) Bromocriptine dose (mg/d)	Mean difference (MD) L‐dopa reduction (mg/d; + in favour of ropinirole)	MD off hours reduction (hours; + in favour of ropinirole)	MD UPDRS Motor (+ in favour of ropinirole)	Drop‐outs (Peto odds ratio < 1 favours ropinirole)
Brunt	139	2.9	25	R:10.0 (24) B: 18 (39.9)	‐0.34	0.72	0.4	n/a
Im	76	2.5	16	R:? (9) B: ? (17.5)	101.3	0.96	‐1.3	0.86
Murayama	267	3 (median)	8	R:4.0 (9) B: 9.2 (22.5)	n/a	n/a	n/a	0.74
Total	482				49.52 (WMD)	0.80 (WMD)		0.76