Assessment of health-related quality of life in arthritis: conceptualization and development of five item banks using item response theory

Table 4 Deleted items by domain and reason for deletion

Item Number	Item content	Lack of fit	DIF for sex	DIF for age
Daily Activities
27	Need for help with grooming		X
40	Difficulty traveling around the town or city			X
41	Difficulty traveling between cities			X
42	Difficulty traveling overseas			X
Walking
3	Limitations in walking or climbing stairs	X
4	Usual ability to walk	X
23	Difficulty moving toes	X
28	Difficulty lifting one foot off the ground		X
30	Difficulty getting in and out of bed			X
35	Difficulty standing on toes	X
38	Description of ability to walk	X
Handling Objects
5	Difficulty scratching the lower back	X
22	Difficulty putting on shoes, socks, or stockings	X
24	Difficulty cutting fingernails	X
29	Difficulty cutting toenails			X
34	Difficulty making bed	X
37	Difficulty putting a hand in a pocket		X
38	Difficulty wiping mouth with a napkin		X
40	Difficulty picking up clothing from the floor	X
49	Difficulty lifting and moving light furniture	X
Pain or Discomfort
8	Time free from any physical complaints	X
19	Feeling perfectly healthy	X
26	Having minor pains and aches			X
Feelings
8	Feeling tense or "high strung"	X
15	Losing temper	X
19	Feeling calm and peaceful			X
29	Worrying about the future			X
31	Having crying spells		X
41	Planning to commit suicide*
44	Feeling totally relaxed and free of tension	X
45	Feeling carefree			X

ISSN: 1477-7525