Reliability and validity of foot function index in flatfeet of children and adolescents
10.3969/j.issn.1006-9771.2025.06.014
- VernacularTitle:足功能指数在儿童和青少年扁平足中的信度和效度
- Author:
Haiyang FENG
1
Author Information
1. 淄博市市立医院康复医学科,山东 淄博市 255499
- Publication Type:Journal Article
- Keywords:
children;
adolescent;
flatfeet;
foot function index;
reliability;
validity
- From:
Chinese Journal of Rehabilitation Theory and Practice
2025;31(6):729-735
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the reliability and validity of foot function index(FFI)in children and adolescent with flatfeet.Methods From January,2023 to June,2024,among the patients with flatfeet aged seven to 18 years who were treated at the 3D Printing Reception Center of the Ninth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine,41 patients who met the requirements were selected as observation group,while 56 children and adolescents with healthy,normal development and no foot problems were selected as the control group.All participants filled out FFI questionnaire.Cronbach's α was used to determine internal consistency of FFI question-naire.The structural validity of the questionnaire was observed by confirmatory factor analysis.Results The mean age of the subjects was(12.99±3.19)years.The Cronbach's α coefficient of FFI was 0.977,and the KMO value was 0.914,showing a good fit of the model.The cumulative variance contribution rates of the princi-pal component for the total population(seven to 18 years old),children group(seven to 13 years old),and adoles-cents group(14 to 18 years old)were 93.967%,91.95%and 96.91%,respectively.Principal component analysis obtained three principal factors.The common factor variance of all items was>0.70,and the factor loading coef-ficient was>0.40,indicating a strong correlation between each common factor and the variable.Conclusion FFI exhibited good internal consistency and construct validity in its application for assessing flatfoot in chil-dren and adolescents.
