Table 3.

HDQLIFE Chorea item parameters

Item	Slope	T1	T2	T3	T4
aHow often did your movements (e.g., chorea) impact your ability to hold things, like a glass or fork?	3.19	0.20	0.66	1.16	1.77
aHow often did you feel unsteady when you were standing?	2.64	−0.39	0.25	1.01	1.57
aHow often did you limit your physical activities because of your movements (e.g., chorea)?	4.50	0.35	0.82	1.24	1.81
aHow often did you limit your social activities because of your movements (e.g., chorea)?	3.77	0.45	0.86	1.32	1.84
aHow often did your movements (e.g., chorea) impact your ability to enjoy the things you do for fun?	4.30	0.35	0.81	1.25	1.65
aHow often did your movements (e.g., chorea) impact your ability to exercise?	4.13	0.46	0.78	1.23	1.48
aHow often did your movements (e.g., chorea) interfere with your ability to do errands?	4.96	0.47	0.82	1.18	1.36
aHow often did your movements (e.g., chorea) interfere with your ability to do your household chores?	5.04	0.45	0.79	1.16	1.39
aHow often did your movements (e.g., chorea) interfere with your ability to get dressed?	4.25	0.71	1.01	1.40	1.74
aHow often did your movements (e.g., chorea) interfere with your ability to eat?	3.93	0.62	0.95	1.39	1.82
aHow often did your movements (e.g., chorea) interfere with your ability to participate in recreational activities?	4.54	0.40	0.71	1.17	1.44
aHow often did your movements (e.g., chorea) interfere with your ability to socialize with your family?	4.03	0.66	0.91	1.44	1.86
aHow often did your movements (e.g., chorea) interfere with your ability to socialize with your friends?	3.82	0.56	0.93	1.42	1.82
aHow often did your movements (e.g., chorea) interfere with your ability to take a bath or shower?	3.99	0.75	1.00	1.39	1.62
aHow often did your movements (e.g., chorea) interfere with your ability to walk?	4.14	0.25	0.70	1.14	1.41
aHow often did your movements (e.g., chorea) interfere with your physical activities?	5.72	0.37	0.76	1.15	1.49
aHow often did your movements (e.g., chorea) interfere with your social activities?	4.89	0.45	0.89	1.31	1.69
aHow often did your movements (e.g., chorea) limit you at work (include work at home)?	4.73	0.36	0.73	1.10	1.40
aHow often did your movements (e.g., chorea) limit your physical activities?	5.35	0.36	0.76	1.17	1.59
aHow often did your movements (e.g., chorea) make you fall?	2.76	0.37	0.98	1.55	2.03
aHow often did your movements (e.g., chorea) prevent you from leaving the house?	4.56	0.72	1.00	1.44	1.81
aHow often were you less effective at home due to your movements (e.g., chorea)?	4.00	0.10	0.58	1.07	1.54
aHow severe was your chorea (e.g., chorea) on average?	3.73	−0.02	0.76	1.24	1.70
bI had to limit my physical activity because of my movements (e.g., chorea)	6.21	0.53	0.91	1.28	1.66
bI had to limit my social activity because of my movements (e.g., chorea)	6.15	0.68	0.96	1.36	1.77
bI had trouble finishing things because of my movements (e.g., chorea)	5.17	0.60	1.00	1.30	1.61
bI had trouble starting things because of my movements (e.g., chorea)	5.10	0.59	1.00	1.34	1.66
bI needed help doing my usual activities	4.64	0.57	1.00	1.30	1.65
aMy movements (e.g., chorea) impacted my ability to bathe or shower	4.22	0.81	1.17	1.46	1.66
aMy movements (e.g., chorea) impacted my ability to get dressed	4.10	0.82	1.16	1.49	1.81
aMy movements (e.g., chorea) impacted my ability to eat	4.58	0.78	1.18	1.51	1.78
aMy movements (e.g., chorea) impacted my ability to feed myself	3.88	0.87	1.29	1.73	1.87
aMy movements (e.g., chorea) impacted my ability to walk	4.57	0.39	0.81	1.19	1.52
aWhat was the severity of your movements (e.g., chorea) on most days?	3.97	−0.08	0.82	1.56	2.13

Items that are indicated in bold were selected for inclusion on the 6-item chorea short form

^aIn the past 7 days

^bDuring the past 7 days