Table 1.

Inclusion and exclusion criteria

	Inclusion criteria	Exclusion criteria
Study population	• Taiwanese over 18 years old living in Taiwan • Participants are family members or significant others of the deceased • The relationship to the deceased: spouse, parents, adult children, sibling, significant other, partner	• The bereavement caused by the death of a child
Study topic	• Studies focused on the experience of having lost a relative or significant other from an expected death, trying to adapt to the relative’s or significant other’s death or the process of grieving and mourning	• Studies focused on developing bereavement measurements or interventions • Unexpected death such as COVID-19, violence, accidents, disaster, suicide, and murder
Type of evidence	• Primary research • Peer-reviewed journal articles
Language	• English, traditional Chinese