Abstract
Background/Purpose: To test the reliability and validity of the Taiwan Chinese version of the Foot Function Index (FFI) among patients with plantar fasciitis and ankle/foot fracture. Methods: Fifty plantar fasciitis patients and 29 ankle/foot fracture patients volunteered for the crosssectional survey and 24 were re-retested later. The response distribution was compared between the two groups. The internal consistency and test-retest reliability were evaluated by using Cronbach's α and intraclass correlation coefficient (ICC). Criterion validity was examined for correlations with the Taiwan version of the Medical Outcomes Study Short Form-36 (SF-36) questionnaire. The influence of covariate (diagnosis, age, gender, employment) on the scores of total FFI and subscales; was explored by multivaria general linear model analysis. Results: Two items in the pain subscale had many answers in the non-applicable category and were removed from analysis. The internal consistency of the 21-item FFI was high (Cronbach's α = 0.94) and the test-retest reliability was satisfactory (ICC = 0.82). The activity limitation subscale had relatively lower Cronbach's α (0.75) and the items in this subscale had a high proportion of floor scores. There was a moderate correlation between the FFI total and subscale scores to the physical component summary scores rather than to the mental component summary scores of the SF-36. Multivariate general linear model analysis showed that the cases of plantar fasciitis had higher pain scores and lower activity limitation scores, although their FFI total scores were comparable. Conclusion: The adapted Taiwan Chinese version of the FFI is reliable and valid and can be applied among traumatic and non-traumatic foot disorders, Nevertheless, its clinical application may be limited by a relatively high proportion of non-applicable answers and significant floor effect in some items.
| Original language | English |
|---|---|
| Pages (from-to) | 111-118 |
| Number of pages | 8 |
| Journal | Journal of the Formosan Medical Association = Taiwan yi zhi |
| Volume | 107 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2008 |
| Externally published | Yes |
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Keywords
- Ankle fracture
- Foot fracture
- Outcome assessment
- Plantar fasciitis
- Questionnaires
ASJC Scopus subject areas
- Medicine(all)
Cite this
Reliability and validity of the Taiwan Chinese version of the foot function index. / Wu, Shih Huey; Liang, Huey Wen; Hou, Wen Hsuan.
In: Journal of the Formosan Medical Association = Taiwan yi zhi, Vol. 107, No. 2, 02.2008, p. 111-118.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Reliability and validity of the Taiwan Chinese version of the foot function index
AU - Wu, Shih Huey
AU - Liang, Huey Wen
AU - Hou, Wen Hsuan
PY - 2008/2
Y1 - 2008/2
N2 - Background/Purpose: To test the reliability and validity of the Taiwan Chinese version of the Foot Function Index (FFI) among patients with plantar fasciitis and ankle/foot fracture. Methods: Fifty plantar fasciitis patients and 29 ankle/foot fracture patients volunteered for the crosssectional survey and 24 were re-retested later. The response distribution was compared between the two groups. The internal consistency and test-retest reliability were evaluated by using Cronbach's α and intraclass correlation coefficient (ICC). Criterion validity was examined for correlations with the Taiwan version of the Medical Outcomes Study Short Form-36 (SF-36) questionnaire. The influence of covariate (diagnosis, age, gender, employment) on the scores of total FFI and subscales; was explored by multivaria general linear model analysis. Results: Two items in the pain subscale had many answers in the non-applicable category and were removed from analysis. The internal consistency of the 21-item FFI was high (Cronbach's α = 0.94) and the test-retest reliability was satisfactory (ICC = 0.82). The activity limitation subscale had relatively lower Cronbach's α (0.75) and the items in this subscale had a high proportion of floor scores. There was a moderate correlation between the FFI total and subscale scores to the physical component summary scores rather than to the mental component summary scores of the SF-36. Multivariate general linear model analysis showed that the cases of plantar fasciitis had higher pain scores and lower activity limitation scores, although their FFI total scores were comparable. Conclusion: The adapted Taiwan Chinese version of the FFI is reliable and valid and can be applied among traumatic and non-traumatic foot disorders, Nevertheless, its clinical application may be limited by a relatively high proportion of non-applicable answers and significant floor effect in some items.
AB - Background/Purpose: To test the reliability and validity of the Taiwan Chinese version of the Foot Function Index (FFI) among patients with plantar fasciitis and ankle/foot fracture. Methods: Fifty plantar fasciitis patients and 29 ankle/foot fracture patients volunteered for the crosssectional survey and 24 were re-retested later. The response distribution was compared between the two groups. The internal consistency and test-retest reliability were evaluated by using Cronbach's α and intraclass correlation coefficient (ICC). Criterion validity was examined for correlations with the Taiwan version of the Medical Outcomes Study Short Form-36 (SF-36) questionnaire. The influence of covariate (diagnosis, age, gender, employment) on the scores of total FFI and subscales; was explored by multivaria general linear model analysis. Results: Two items in the pain subscale had many answers in the non-applicable category and were removed from analysis. The internal consistency of the 21-item FFI was high (Cronbach's α = 0.94) and the test-retest reliability was satisfactory (ICC = 0.82). The activity limitation subscale had relatively lower Cronbach's α (0.75) and the items in this subscale had a high proportion of floor scores. There was a moderate correlation between the FFI total and subscale scores to the physical component summary scores rather than to the mental component summary scores of the SF-36. Multivariate general linear model analysis showed that the cases of plantar fasciitis had higher pain scores and lower activity limitation scores, although their FFI total scores were comparable. Conclusion: The adapted Taiwan Chinese version of the FFI is reliable and valid and can be applied among traumatic and non-traumatic foot disorders, Nevertheless, its clinical application may be limited by a relatively high proportion of non-applicable answers and significant floor effect in some items.
KW - Ankle fracture
KW - Foot fracture
KW - Outcome assessment
KW - Plantar fasciitis
KW - Questionnaires
UR - http://www.scopus.com/inward/record.url?scp=40749153155&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=40749153155&partnerID=8YFLogxK
U2 - 10.1016/S0929-6646(08)60124-2
DO - 10.1016/S0929-6646(08)60124-2
M3 - Article
C2 - 18285243
AN - SCOPUS:40749153155
VL - 107
SP - 111
EP - 118
JO - Journal of the Formosan Medical Association
JF - Journal of the Formosan Medical Association
SN - 0929-6646
IS - 2
ER -