Development and Psychometric Evaluation of KAP‐ST: A Knowledge, Attitude and Practice Instrument for Care Workers at Preventing Skin Tears

ABSTRACT Aim Preventing skin tears (STs) in older adults is an urgent public health concern, especially in long‐term care (LTC) facilities. However, limited research on ST prevention among care workers exists due to a lack of suitable assessment tools. This study aims to develop and psychometrically evaluate the Knowledge, Attitude and Practice instrument for care workers in preventing Skin Tears (KAP‐ST) in older adults. Method The KAP‐ST was developed and validated in four phases during May–October 2024. First, an item pool was generated through a comprehensive literature review. Second, a preliminary instrument was developed through a Delphi expert consultation and pilot testing. Third, the items and the final instrument were optimised through a cross‐sectional survey involving 317 care workers from 29 LTC facilities in China. Finally, a psychometric evaluation was conducted in another cross‐sectional survey involving 373 care workers from 18 LTC facilities. Result The final KAP‐ST contains 35 items across knowledge, attitude and practice dimensions. Exploratory factor analysis (EFA) revealed a nine‐factor structure (factor loadings ranging from 0.451 to 0.799, accounting for 61.35% of total variance). The Item‐Level Content Validity Index (I‐CVI) values ranged from 0.926 to 1.000, and the Scale‐Level Content Validity Index (S‐CVI/Ave) was 0.991. The instrument's Cronbach's α, split‐half, and test–retest reliability coefficients were 0.887, 0.744, and 0.934, respectively. The CFA analysis revealed an ideal absolute fit validity (RMSEA = 0.068; RMR = 0.029) and parsimony fit validity (PGFI = 0.684). Conclusion The KAP‐ST demonstrates strong reliability, structural validity and content validity. It is well‐suited for assessing care workers' knowledge, attitudes and practices in preventing STs among older adults. Further research is required to enhance and confirm its validity. Implications for the Profession STs in the spotlight recently necessitate the use of appropriate investigative tools to facilitate in‐depth research, especially for care workers, who should prioritise access to specialised knowledge. Introducing professional guidance in LTC facilities is recommended to enhance the knowledge, attitude and practice of care workers. Reporting Method Standardised Guidelines for Scale Construction and COSMIN checklist. Patient or Public Contribution No patient or public contributions.