| COM-B | TDF | Facilitator | Barrier |
|---|
| Capability | | | | | Psychological capability | Knowledge | Knowledge of ACP[16,23] Education level[15,18,21,29] Accurate knowledge of prognosis[27-28,30,32] | Knowledge of ACP[19] | | Behavioural regulation | Knowledge of the time of disease diagnosis[18] Prior experience[18,21,23] | Subjective life expectancy[27] | | Physical capability | Skills | Age[23-24,29-30] Cancer site[20,23] | Disease symptom burden[29] | | Opportunity | | | | | Social opportunity | Social influences | Marital status[16-18,20,30] Race/ethnicity[26,31] Family support[23,26,32] Doctor-patient relationship[22-23,26] Religious belief[16,20] Gender[20,24] Social support[18,26] Dependent children[34] Acculturation[22] | Marital status[30] Race/ethnicity[35] Family support[23] Doctor-patient relationship[15,22] Religious belief[15,26,35] | | Physical opportunity | Environmental context and resources | Family economic condition[17,24] Place of living[20] Housing type[20] | Hospice service center[30] Place of living[18,24] | | Motivation | | | | | Reflective motivation | Intentions | ‒ | ACP attitude[16,19,22-23] | | Goals | ACP belief[20,23] | ‒ | | Beliefs about capabilities | ACP motivation[23] | ACP motivation[20] | | Automatic motivation | Emotion | Anxiety and depression[33] | Death attitude[15,17,25,29] |
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