Abstract
Advance care planning (ACP) is a crucial process in clinical practice, enabling individuals to articulate their care preferences and goals, with significant implications for future healthcare. However, ACP practice of health and social care professionals (HSCPs) concerning patients, or their family members are rarely explored. The objective of the study was to adapt and validate a four-item scale assessing ACP practices of HSCPs toward patients or their family members. The ACP Practice Scale was evaluated through a cross-sectional online survey administered to HSCPs in Macao, assessing its factor structure, validity, and reliability. Based on a sample of 186 valid responses, the ACP Practice Scale demonstrated satisfactory levels of validity and reliability among HSPCs in Macao. The four-item scale explained 65.87% of the variance in ACP practice and exhibited strong internal consistency, with Cronbach's alpha and McDonald's omega coefficients of 0.82. Furthermore, item factor loadings ranged from 0.71 to 0.90. The ACP Practice Scale provides reliable and valid measurements of ACP practice among HSCPs. This instrument can help to enhance our understanding of ACP practices in clinical settings and support the advancement of advance care planning.