Nurses' intention and attitude to participate in advance care planning: An extended theory of planned behaviour using structural equation modelling–A cross‐sectional study

Abstract Aims This study aimed to investigate the factors influencing nurses' intentions to participate in advance care planning (ACP) by examining the mediating roles of attitude, subjective norm, and perceived behavioural control in the relationship between knowledge and intention, using an extended theory of planned behaviour and structural equation modelling. Methods A descriptive cross‐sectional survey was conducted between January and April 2023, involving 515 registered nurses, selected through two‐stage sampling. Data were collected using a self‐administered online survey distributed via the internal communication system of hospital. Structural equation Modelling was employed to analyse the relationships among knowledge, attitude, subjective norm, perceived behavioural control and intention to participate in ACP. Results The results supported two hypotheses regarding the relationships between knowledge, attitude, subjective norm, perceived behavioural control, and intention ( p < 0.05). While the direct effect of knowledge on intention was not significant ( β = 0.087, p = 0.292), the total indirect effect through attitude, subjective norm and perceived behavioural control was significant ( β = 0.449, p < 0.001), accounting for approximately 83.77% of the total effect on intention. This underscores the critical role of these mediators in influencing nurses' intention to participate in ACP. Conclusions This study highlights the significant indirect influence of knowledge on nurses' intentions to participate in ACP through attitude, subjective norms and perceived behavioural control. These findings suggest that targeted educational is needed to enhance ACP participation among nurses. Implications for the Profession and/or Patient Care Understanding the role of attitude, subjective norm and perceived behavioural control can enhance nursing practice. Creating supportive environments and promoting interdisciplinary collaboration are crucial. Professional development through training, mentorship and role modelling can empower nurses in ACP. Comprehensive programs that increase knowledge and foster positive attitudes are essential for advancing ACP practice among nurses. Impact Educational programs aimed at nurses should include components designed to strengthen knowledge and the identified mediators, equipping nurses with the necessary ACP skills. Organizational support through appropriate policy frameworks can facilitate these educational endeavours and ensure a sustainable impact on practice. Reporting Method The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist for cross‐sectional studies.