Covariates and candidate confounds*
| Characteristics of the deceased | Age Socio-economic and cultural background Religious beliefs Communication of desire to donate to family members |
| Characteristics of the deceased person’s relatives | Age Socio-economic and cultural background Religious beliefs Information received about donation and transplantation Experience with donation and transplantation Attitudes towards donation Number of decision-makers and relationship between them Social support |
| Perceptions of bereaved family members | Satisfaction with the medical team Satisfaction with personal treatment Satisfaction with information received |
| Circumstances of death | Cause of death Determination of death by neurological or circulatory criteria Duration of process Expectancy of death |
| Behaviour of the health professional | Care and communication with the patient and relatives (death, diagnosis of brain death, information and request for donation). |
*Based on variables affecting the decision to donate.9