Table 7.

Interval Regression Results for Time Tradeoffs^a

Benefit	All Benefits
N	n = 4657
Covariate	Coeff.	SE
ln(benefit)	6.72	0.43
Age
61–66 years * ln(benefit)	−0.09	0.22
67–71 years * ln(benefit)	−0.84	0.21
>71 years * ln(benefit)	−1.31	0.22
Nonambulatory	−0.71	0.20
Cognitive impairment	−0.36	0.16
DBS	−0.62	0.25
Dyskinesia	−0.40	0.17
Motor ≥2	0.25	0.40

DBS, deep brain stimulation.

^aBoldface values denote estimated coefficients that are significant at the 5% level.