Table 2.

Exploratory factor analysis results of the HDQLIFE Chorea item pool

Item	Factor 1	Factor 2	Factor 3	Factor 4	Factor 5
bMy movements (e.g., chorea) impacted my ability to eat	0.94	0.06	0.03	0.01	−0.15
bMy movements (e.g., chorea) impacted my ability to get dressed	0.91	0.06	−0.15	−0.02	0.22
bMy movements (e.g., chorea) impacted my ability to feed myself	0.90	−0.04	0.10	0.00	−0.05
bMy movements (e.g., chorea) impacted my ability to bathe or shower	0.86	0.09	−0.05	−0.10	0.24
aHow often did your movements (e.g., chorea) interfere with your ability to eat?	0.76	0.11	0.14	0.06	−0.09
aHow often did your movements (e.g., chorea) interfere with your ability to get dressed?	0.75	0.12	−0.04	0.01	0.21
bI needed help doing my usual activities	0.73	0.10	0.05	0.13	0.05
bI had to limit my physical activity because of my movements (e.g., chorea)	0.67	0.11	0.17	0.14	0.01
bMy movements (e.g., chorea) impacted my ability to walk	0.66	0.18	−0.08	0.31	−0.01
bI had trouble starting things because of my movements (e.g., chorea)	0.66	−0.05	0.43	0.00	0.03
bI had to limit my social activity because of my movements (e.g., chorea)	0.64	0.25	0.26	−0.02	−0.08
aHow often did your movements (e.g., chorea) interfere with your ability to take a bath or shower?	0.63	0.30	0.04	−0.17	0.25
bI had trouble finishing things because of my movements (e.g., chorea)	0.62	−0.06	0.44	0.04	0.11
aHow often did your movements (e.g., chorea) interfere with your physical activities?	0.59	0.33	−0.01	0.14	0.06
aHow often did your movements (e.g., chorea) interfere with your ability to walk?	0.57	0.15	0.02	0.29	0.11
aHow often did your movements (e.g., chorea) impact your ability to hold things, like a glass or fork?	0.57	0.13	0.15	0.21	0.00
aHow often did your movements (e.g., chorea) prevent you from leaving the house?	0.56	0.20	0.19	−0.08	0.21
aHow often did your movements (e.g., chorea) limit your physical activities?	0.51	0.32	−0.01	0.27	0.04
aHow often did your movements (e.g., chorea) impact your ability to enjoy the things you do for fun?	0.49	0.36	0.08	0.19	−0.10
aHow often did your movements (e.g., chorea) interfere with your ability to do your household chores?	0.42	0.37	−0.04	0.23	0.16
aHow often did you feel unsteady when you were standing?	0.40	0.15	0.06	0.40	0.11
aHow often did your movements (e.g., chorea) interfere with your ability to do errands?	0.39	0.39	0.04	0.10	0.27
aHow often did your movements (e.g., chorea) limit you at work (include work at home)?	0.33	0.29	0.16	0.25	0.19
aHow often did your movements (e.g., chorea) interfere with your ability to socialize with your friends?	0.40	0.67	0.18	−0.23	−0.10
aHow often did you feel restless?	−0.02	0.67	0.07	0.15	−0.04
aHow often did you limit your social activities because of your movements (e.g., chorea)?	0.23	0.66	0.12	−0.01	−0.03
aHow often did you limit your physical activities because of your movements (e.g., chorea)?	0.28	0.62	−0.07	0.18	0.08
aHow often did your movements (e.g., chorea) impact your ability to enjoy life?	0.15	0.62	0.15	0.15	0.01
aHow often did your movements (e.g., chorea) impact your ability to feel happy?	0.24	0.60	0.16	−0.01	−0.02
aHow often did your movements (e.g., chorea) interfere with your ability to socialize with your family?	0.42	0.56	0.24	−0.22	−0.04
aHow often did your movements (e.g., chorea) make you feel exhausted?	0.01	0.55	0.23	0.22	0.01
bI was frustrated by my movements (e.g., chorea)	0.16	0.53	0.06	0.38	−0.08
aHow often were you less effective at work due to your movements (e.g., chorea) (include work at home)	0.18	0.52	0.01	0.30	0.14
aHow often did your movements (e.g., chorea) interfere with your social activities?	0.47	0.50	0.17	−0.10	−0.02
aHow often did your movements (e.g., chorea) make you feel tired?	0.24	0.48	0.12	0.14	0.08
aHow often were you bothered by your movements (e.g., chorea)?	0.02	0.49	0.18	0.37	0.02
aHow much were you bothered by your movements (e.g., chorea) on average?	0.11	0.47	0.18	0.39	−0.07
aHow often were you bothered by your subtle twitching?	0.00	0.47	0.31	0.32	−0.08
aHow often did your movements (e.g., chorea) interfere with your ability to participate in recreational activities?	0.45	0.46	0.03	0.07	0.03
aHow often did your movements (e.g., chorea) impact your ability to exercise?	0.45	0.46	−0.08	0.07	0.19
aHow often were you less effective at home due to your movements (e.g., chorea)?	0.22	0.46	0.02	0.32	0.18
aHow often did your movements (e.g., chorea) make you drop things?	0.23	0.40	0.10	0.34	−0.02
aHow often did your movements (e.g., chorea) make you fall?	0.26	0.37	0.13	0.21	0.05
aHow often did you walk into other people?	0.21	0.35	0.14	0.22	−0.14
aHow often did you have tremors?	0.10	−0.01	0.82	0.11	−0.07
aHow often were you bothered by your tremors?	−0.01	0.19	0.74	0.14	−0.14
aHow noticeable was your shakiness?	0.01	0.03	0.72	0.22	0.16
aHow often did you have shakiness?	−0.09	0.33	0.72	−0.08	0.29
aHow often did your hands shake?	0.04	−0.01	0.72	0.09	0.28
aHow noticeable were your tremors?	0.21	−0.01	0.64	0.23	0.01
aHow often were you bothered by your shakiness?	−0.12	0.48	0.64	−0.08	0.19
aHow noticeable were your tics?	0.12	0.02	0.60	0.29	0.01
aHow often did your legs shake?	−0.03	0.22	0.59	0.18	0.13
aHow often did you have subtle twitching?	0.02	0.11	0.58	0.32	−0.03
aHow often did you have movements (e.g., chorea)?	0.03	0.31	0.14	0.59	0.07
aHow noticeable were your movements (e.g., chorea)?	0.11	0.16	0.26	0.55	0.12
aHow severe was your chorea when it was at its worst?	0.16	0.25	0.24	0.49	−0.03
aWhat was the severity of your movements (e.g., chorea) on most days?	0.34	0.10	0.24	0.46	0.08
aHow severe was your chorea (e.g., chorea) on average?	0.38	0.03	0.29	0.43	0.04
aHow often were you unable to stay still?	0.19	0.20	0.07	0.37	0.28
aHow often did you experience severe movements (e.g., chorea)?	0.20	0.26	0.29	0.32	0.03
aHow often did your movements (e.g., chorea) interfere with your ability to drive?	0.27	0.09	0.14	0.14	0.63
bMy movements (e.g., chorea) impacted my ability to drive	0.46	−0.12	0.16	0.15	0.62
bI was able to do my usual activities	0.25	0.09	−0.12	−0.47	0.00

Bold values refers to item loadings that were >0.3

^aIn the past 7 days

^bDuring the past 7 days