Cross-cultural adaptation and validation for central sensitization inventory: based on Chinese patients undergoing total knee arthroplasty for knee osteoarthritis

Table 3 Factor loadings of the EFA with promax rotation

Item no.	Question	F1	F2	F3	F4	F5	Original version [19]	Hongkong version [23]
5	Diarrhea/constipation	0.939					F3	Not loading
16	Sad or depressed	0.938					F1	F1
6	Need help with daily activity	0.935					F3	Not loading
15	Stress makes symptoms worse	0.930					F1	Not loading
13	Difficulty concentrating	0.929					F1	F1
3	Anxiety attacks	0.908					F1	F1
24	Trauma as a child	0.768					F1	Bladder and teeth grinding disorders
23	Poor memory	0.697					F1	Concentration and memory problem
19	Pain in jaw		0.955				F2	Not loading
7	Sensitive to bright lights		0.927				F2	Hypersensitivity syndrome
4	Grind/clench teeth		0.922				F2	Bladder & teeth grinding disorders
10	Headaches		0.896				F2	Not loading
17	Low energy			0.854			F3	Concentration and memory problem
2	Muscles stiff/achy			0.769			F3	F3
14	Skin problems			0.709			F3	Not loading
20	Certain smells make dizzy			0.676			F2	Not loading
9	Pain all over body			0.591			F3	F3
18	Tension neck and shoulder			0.512			F3	F3
11	Bladder/urination pain				0.907		F4	Bladder & teeth grinding disorders
25	Pelvic pain				0.896		F4	Not loading
21	Urinate frequently				0.822		F4	Hypersensitivity syndrome
22	Restless legs					0.857	F3	Not loading
12	Do not sleep well					0.807	F3	Not loading
8	Easily tired with physical activity					0.741	F3	F3
1	Unrefreshed in morning					0.565	F3	Not loading

EFA exploratory factor analysis, F1 Emotional Distress, F2 Headache and Jaw Symptoms, F3 Physical Symptoms, F4 Urological Symptoms, F5 Fatigue and Sleep Problems

ISSN: 1749-799X