Table 1.

Summarized sample information.

Type	N	Motor onset	Disease duration	Age at death	Post mortem interval	RNA integrity number
Control	33	–	–	68.1 ± 14.8	15.0 ± 8.7	7.6 ± 0.7
All diagnosed PD	29	66.5 ± 9.8	10.5 ± 6.5	77.6 ± 9.0**	11.1 ± 9.7	7.3 ± 0.7
PD, Non demented	18	64.1 ± 7.2	11.5 ± 6.4	76.1 ± 8.9	11.9 ± 9.2	7.2 ± 0.8
PD with dementia	11	69.8 ± 12.2	9.2 ± 6.7	79.9 ± 9.0	9.9 ± 10.9	7.5 ± 0.5

Ages at death were significantly different between controls and PD, as indicated (

^**p < 0.01 compared to controls). No differences between PDN and PDD were observed.