Levodopa Prescription Patterns in Patients with Advanced Parkinson’s Disease: A Japanese Database Analysis

Table 4

Number of medications used concomitantly with levodopa that patients were receiving at index date.

Parameters	Patients receiving concomitant treatment
	With PD drug^a (n = 3265)	With non-PD drug^b (n = 3265)
Number of concomitant drugs/patient
Mean (SD)	1.8 (1.5)	2.2 (1.4)
Median (Q1, Q3)	1.0 (1.0, 3.0)	2.0 (1.0, 3.0)
Number of concomitant drugs received, n (%)
0	883 (27.0)	527 (16.1)
1	895 (27.4)	849 (26.0)
2	660 (20.2)	827 (25.3)
3	437 (13.4)	578 (17.7)
4	239 (7.3)	288 (8.8)
≥5	151 (4.6)	196 (6.0)

^aDrugs with an approved indication of PD. ^bDrugs often used in patients with PD but not specifically indicated for PD. PD, Parkinson’s disease; Q1/Q3, quartile 1/quartile 3; SD, standard deviation.