Development and psychometric evaluation of the Dialysis patient-perceived Exercise Benefits and Barriers Scale.
BACKGROUND
Perceptions of exercise benefits and barriers affect exercise behavior. Because of the clinical course and treatment, dialysis patients differ from the general population in their perceptions of exercise benefits and barriers, especially the latter. At present, no valid instruments for assessing perceived exercise benefits and barriers in dialysis patients are available.


OBJECTIVE
Our goal was to develop and test the psychometric properties of the Dialysis patient-perceived Exercise Benefits and Barriers Scale (DPEBBS).


METHODS
A literature review and two focus groups were conducted to generate the initial item pool. An expert panel examined the content validity. Then, 269 Chinese hemodialysis patients were recruited by convenience sampling. Exploratory and confirmatory factor analyses were used to test construct validity. Finally, internal consistency and test-retest reliability were assessed.


RESULTS
The expert panel determined that the content validity index was satisfactory. The final 24-item scale consisted of six factors explaining 57% of the total variance in the data. Confirmative factor analysis supported the six-factor structure and a higher-order model. Cronbach's alpha was 0.87 for the total scale, and 0.84 for test-retest reliability.


CONCLUSIONS
The DPEBBS was a valid and reliable instrument for evaluating dialysis patients' perceived benefits and barriers to exercise. The application value of this scale remains to be investigated by increasing the sample size and evaluating patients undergoing different dialysis modalities and coming from different regions and cultural backgrounds.
Zheng
Jing
J
School of Nursing, Sun Yat-sen University, 74 Zhongshan Rd. 2, Guangzhou 510089, China.
You
Li-Ming
LM
Lou
Tan-Qi
TQ
Chen
Nian-Chang
NC
Lai
De-Yuan
DY
Liang
Yan-Yi
YY
Li
Ying-Na
YN
Gu
Ying-Ming
YM
Lv
Shao-Fen
SF
Zhai
Cui-Qiu
CQ
D000368:Aged; D002681:China; D015444:Exercise / Q000523:psychology*; D005260:Female; D017144:Focus Groups; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics / Q000379:methods*; D006435:Renal Dialysis / Q000523:psychology*