| Literature DB >> 34785552 |
Christopher Weiyang Liu1,2,3, Lynn N Chen4, Amalina Anwar5, Boyu Lu Zhao5, Clin K Y Lai5, Wei Heng Ng5, Thangavelautham Suhitharan2,3,6, Vui Kian Ho2,3,6, Jean C J Liu7,8.
Abstract
OBJECTIVES: Intensive care audits point to family refusal as a major barrier to organ donation. In this study, we sought to understand refusal by accounting for the decision-maker's mindset. This focused on: (1) how decisions compare when made on behalf of a relative (vs the self); and (2) confidence in decisions made for family members.Entities:
Keywords: health services administration & management; medical ethics; transplant surgery
Mesh:
Year: 2021 PMID: 34785552 PMCID: PMC8596040 DOI: 10.1136/bmjopen-2021-051273
Source DB: PubMed Journal: BMJ Open ISSN: 2044-6055 Impact factor: 2.692
Figure 1Flowchart of participant inclusion.
Baseline characteristics of survey respondents
| Characteristics | N (%) |
| Gender | |
| 469 (48.2) | |
| 472 (48.5) | |
| 32 (3.3) | |
| Age group | |
| 316 (32.8) | |
| 311 (32.0) | |
| 171 (17.2) | |
| 37 (3.7) | |
| 138 (14.2) | |
| Ethnicity | |
| 716 (73.6) | |
| 92 (9.5) | |
| 86 (8.8) | |
| 3 (0.3) | |
| 43 (4.4) | |
| 33 (3.4) | |
| Religion | |
| 337 (34.6) | |
| 51 (5.2) | |
| 112 (11.5) | |
| 60 (6.2) | |
| 2 (0.2) | |
| 39 (4.0) | |
| 139 (14.3) | |
| 189 (19.4) | |
| 12 (1.2) | |
| 32 (3.3) | |
| Education level | |
| 7 (0.7) | |
| 55 (5.7) | |
| 223 (22.9) | |
| 662 (68.0) | |
| 26 (2.7) | |
| Marital status | |
| 343 (35.3) | |
| 554 (56.9) | |
| 47 (4.8) | |
| 29 (3.0) | |
| House type | |
| 20 (2.1) | |
| 303 (31.1) | |
| 303 (31.1) | |
| 247 (25.4) | |
| 41 (4.2) | |
| 28 (2.9) | |
| 1 (0.1) | |
| 30 (3.1) | |
| Household size | |
| 30 (3.1) | |
| 126 (12.9) | |
| 221 (22.7) | |
| 254 (26.1) | |
| 175 (18.0) | |
| 61 (6.3) | |
| 42 (4.3) | |
| 64 (6.6) | |
Figure 2The distribution of participants as a function of their willingness to donate their own organs and donate a family member’s organs.
Figure 3A machine learning technique—recursive partitioning—was used to predict which of four categories the participants belonged to: (1) consistent donors (willing to donate for both the self and for a relative); (2) consistent non-donors (unwilling to donate in both cases); (3) willing donors who refuse (being willing to donate for themselves but not for next-of-kin); or (4) unwilling donors who agree (being unwilling for the self but willing for next-of-kin). The final model, presented as a flow chart, shows how participant information was used to maximize information gain at each level of the chart, a factor was chosen that allowed the most number of participants to be categorized. As shown in the bar graph, participants’ organ donation fears and religion emerged as the key predictors (model classification accuracy: 52%, above the chance level of 25%).
Figure 4Participants’ organ donation fear scores (for a family member and for themselves), power distance scores, and religion as a function of their donation decisions.
Figure 5(A) Participants reported whether they had discussed organ donation with a close family member they may be tasked to make decisions for (left panel). The bar graphs depict the per cent of participants in each category (no prior discussion vs prior discussion) who reported being aware of their family members’ views (middle panel), and confident that they would respect their family members’ wishes on death (right panel). (B) Similarly, participants reported whether they had discussed their own views with their family (left panel), whether their family was aware (middle panel) and how confident they were that their family would carry out their wishes (right panel). Vertical lines represent 95% CIs.
Figure 6Bar graphs depict the per cent of participants in each category (consistent non-donors, consistent donors, unwilling donors who donate relatives’ organs or willing donors who refuse family donations) who had discussed organ donation with a close family member (left panel), were aware of their relative’s wishes (middle panel) and were confident of carrying these wishes out (right panel). Vertical lines represent 95% CIs.