Table 5: Levodopa treatment parameters.

Total sample ( )Men Women
RangeMean (SD) Mean (SD) Mean (SD)

L-dopa delay1970–152 (3)1242 (3)733 (3)0.31
L-dopa duration1971–30 9 (6)1249 (6)739 (6)0.66
L-dopa max 169150–2250833 (429)108870 (441)61767 (403)0.16

L-dopa delay: years from PD onset until L-dopa initiation; L-dopa duration: years of L-dopa treatment; L-dopa max: maximum recorded L-dopa dose in milligrams.