. Author manuscript; available in PMC: 2017 Jul 11.

Published in final edited form as: J Huntingtons Dis. 2017;6(2):127–137. doi: 10.3233/JHD-170236

Table 1.

Prediction of risk of HD diagnosis: estimated association parameter α in joint models.

Variables	α	SE	HR^* or HR⁻¹ (95% CI)
Total motor score	0.64	0.05	1.90 (1.72–2.11)
Putamen ICV	−0.68	0.13	1.97 (1.53–2.57)
Stroop word score	−0.56	0.08	1.74 (1.47–2.04)
FrSBE-executive subscale	0.34	0.07	1.40 (1.22–1.62)
Total functional capacity	−0.39	0.05	1.48 (1.35–1.61)

Hazard ratio (HR) or inverse hazard ratio (HR⁻¹) show the hazard for HD diagnosis associated with a difference of one SD in each measure.