Elevated Serum Ceruloplasmin Levels Are Associated with Higher Impulsivity in People with Parkinson’s Disease

Table 3

Generalised linear regression models for total BIS-11 and 2nd order and 1st order outcomes in normal and high ceruloplasmin groups.

Variable	Total (n = 214)	Low (n = 158)	High (n = 56)	Naïve comparison	Corrected comparison
BIS-11 total score	60.89 (0.63)	60.27 (0.77)	62.63 (1.06)	0.109	0.224
2nd order attentional	15.66 (0.24)	15.59 (0.29)	15.86 (0.43)	0.615	0.670
1st order attentional	10.38 (0.19)	10.35 (0.22)	10.45 (0.33)	0.864	0.427
1st order cognitive instability	5.28 (0.11)	5.23 (0.13)	5.41 (0.19)	0.422	0.209
2nd order nonplanning	23.91 (0.35)	23.40 (0.41)	25.34 (0.62)	0.012	0.003
1st order self-control	12.39 (0.23)	12.12 (0.27)	13.14 (0.45)	0.047	0.020
1st order cognitive complexity	11.52 (0.18)	11.28 (0.22)	12.20 (0.34)	0.028	0.009
2nd order motor	21.29 (0.25)	21.28 (0.29)	21.30 (0.49)	0.991	0.921
1st order motor	13.71 (0.20)	13.69 (0.23)	13.75 (0.39)	0.895	0.946
1st order perseverance	7.58 (0.12)	7.59 (0.14)	7.55 (0.23)	0.767	0.898