Validity, reliability, and acceptability of the scale of knowledge, attitude, and behavior of lifestyle intervention in a diabetes high-risk population
10.3760/cma.j.issn.0253-9624.2016.07.004
- VernacularTitle:糖尿病高危人群生活方式干预知识、态度、行为评价量表的效度、信度及可接受性评价
- Author:
Wenjuan WANG
1
;
Jing DONG
;
Zeping REN
;
Bo CHEN
;
Wei HE
;
Weidong LI
;
Zuowen HAO
Author Information
1. 中国疾病预防控制中心慢性非传染性疾病预防控制中心
- Keywords:
Diabetes mellitus;
Intervention studies;
Scale
- From:
Chinese Journal of Preventive Medicine
2016;50(7):584-588
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the validity, reliability, and acceptability of the scale of knowledge, attitude, and behavior of lifestyle intervention in a diabetes high-risk population (HILKAB), and provide scientific evidence for its usage. Methods By convenient sampling, we selected 406 individuals at high risk for diabetes for survey using the HILKAB. Pearson correlation coefficient, factor analysis, independent sampling, and t-test for high-and low-score groups were used to evaluate the content validity, construct validity, and discriminant validity of the scale. Reliability of the scale was evaluated by internal consistency, which included Cronbach'sαcoefficient,θcoefficient,Ωcoefficient, and split-half reliability. Scale acceptability was evaluated by acceptance rate and completion time of the survey. Results In this study, 366 questionnaires (90.1%) was qnalified and the completion time was (8.62 ± 2.79) minutes. Scores for knowledge, attitude, and behavior were 10.60±3.73, 26.56±3.58, 17.09±9.74, respectively. The scale had good face validity and content validity. The correlation coefficient of items and the dimension to which they belong was between 0.25 and 0.97, and the correlation coefficient of three dimensions and the entire scale was between 0.64 and 0.91, all with P<0.001. Factor analysis of the scale extracted eight common factors. The cumulative variance contribution rate was 65.23%, thereby reaching the 50% approved standard. Of 30 items there were 29 items with factor loadings ≥0.40, indicating the scale had good construct validity. For the high-score group, scores for knowledge, attitude, and behavior dimensions were 13.89±2.55, 29.56± 2.46, 28.05 ± 2.93, respectively, which were higher than those for the low-score group (7.67 ± 2.78, 23.89 ± 3.35, 6.25 ± 3.13); t-values were 55.14, 119.40, 95.29, respectively, with P<0.001. The scale consisted of three dimensions: knowledge, attitude, and behavior. The Cronbach's α coefficient was between 0.84 and 0.92, the θ coefficient was between 0.85 and 0.96, the Ω coefficient was between 0.90 and 0.94, and the split-half reliability was between 0.77 and 0.95, reaching the 0.70 standard letter. Conclusion The validity, reliability, and acceptability of the HILKAB scale were satisfactory for use in a population at high risk of diabetes.
