Table 3.

MBI-C total and domain scores.

MBI-C scores Mean, SD (Min–Max)	Val carriers (GG) N = 90	Met carriers (GA, AA) N = 46	r2, Beta (CI 95%)	p-value*
MBI-C total	4.06, ±4.50 (0–20)	7.39, ±8.05 (0–29)	0.13, 0.25 (1.17–5.35)	0.003**
Drive/motivation	1.10, ±1.72 (0–8)	1.43, ±2.02 (0–8)	0.06, 0.07 (−0.38 to 0.92)	0.41
Mood/anxiety	1.48, ±2.21 (0–13)	2.87, ±3.36 (0–12)	0.10, 0.24 (0.46–2.35)	0.004**
Impulse dyscontrol	0.79, ±1.43 (0–8)	1.15, ±2.80 (0–13)	0.03, 0.10 (−0.28 to 1.16)	0.23
Social inappropriateness	0.16, ±0.62 (0–4)	0.43, ±1.41 (0–7)	0.04, 0.14 (−0.07 to 0.63)	0.11
Abnormal thoughts/perception	0.53, ±1.09 (0–4)	1.50, ±2.54 (0–11)	0.12, 0.23 (0.26–1.48)	0.006**

MoCA and UPDRS scores were used in a multiple linear regression model. In total, 10 PD participants were identified as outliers and removed from the analysis.

Val, valine; Met, methionine; MBI-C, mild behavioral impairment checklist; SD, standard deviation; Min, minimum; Max, maximum; MoCA, montreal cognitive assessment; CI 95%, 95% confidence interval.

^*Analysis was performed using multiple linear regression model including MoCA and UPDRS scores in the model. MoCA and MBI-C total scores were negatively correlated (r_p = 0.17, p = 0.043), while UPDRS and MBI-C total scores were positively correlated (r_p = 0.23, p = 0.007).

^**p-value was set to <0.01 to correct for multiple tests, Bonferroni correction.