22 results on '"van den Akker, O. B. A."'
Search Results
2. § British womenʼs attitudes to surrogacy
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Poote, A E and van den Akker, O B
- Published
- 2009
3. A systematic review and meta-analysis of lifestyle and body mass index predictors of successful assisted reproductive technologies
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Purewal, Satvinder, primary, Chapman, S. C. E., additional, and van den Akker, O. B. A, additional
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- 2017
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4. A systematic review and meta-analysis of lifestyle and body mass index predictors of successful assisted reproductive technologies.
- Author
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Purewal, Satvinder, Chapman, S. C. E., and van den Akker, O. B. A
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REPRODUCTIVE technology ,BODY mass index ,META-analysis ,CHILDBIRTH ,RANDOM effects model - Abstract
Objective: Lifestyle (smoking, drinking alcohol) and body mass index (BMI) predictors of successful outcomes in assisted reproductive technology (ART) treatments were examined in this meta-analysis.Method: A bibliographic search was undertaken using six databases. The review was informed by PRISMA/MOOSE guidelines. Meta-analytic data were analysed using random effects models.Results: We included 77 studies examining effects of BMI, smoking and drinking alcohol. Patients with a BMI< =24.9 were significantly more likely to achieve LB/pregnancy than with BMI> =25 OR = 1.219 (95% CI:1.128-1.319, z = 4.971, p < .001; I2 = 53.779%, p = .001). Non-smokers were significantly more likely to achieve a LB or pregnancy than smokers OR = 1.457 (95% CI:1.228-1.727, z = 4.324, p < .001; I2 = 51.883; p = .001). Meta-regression revealed the number of embryos transferred significantly moderated the effects of smoking on ART outcomes, and there was a trend indicating primary infertility and high BMI were also significant moderators. The evidence for drinking alcohol was inconclusive due to the small number of studies.Conclusions: This meta-analysis confirms that ART treatment success can be predicted with lifestyle factors. Further, non-smokers' relative odds of pregnancy/live birth increase as more embryos were transferred but there was a trend that the odds of pregnancy/live birth decrease with primary infertility and high BMI. [ABSTRACT FROM AUTHOR]- Published
- 2019
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5. Expectations and experiences of gamete donors and donor-conceived adults searching for genetic relatives using DNA linking through a voluntary register
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van den Akker, O. B. A., primary, Crawshaw, M. A., additional, Blyth, E. D., additional, and Frith, L. J., additional
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- 2014
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6. SELECTED ORAL COMMUNICATION SESSION, SESSION 20: PARENTING AFTER GAMETE DONATION, Monday 4 July 2011 15:15 - 16:30
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Purewal, S., primary, Crawshaw, M., additional, van den Akker, O. B. A., additional, Casey, P., additional, Jadva, V., additional, Readings, J., additional, Blake, L., additional, Golombok, S., additional, Freeman, T., additional, Brewaeys, A. M. A., additional, Brewaeys, M., additional, and de Reus, E., additional
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- 2011
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7. Editorial: Misgivings about change, long live myths; ‘size’ and ‘shape’ do matter
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van den Akker, O. B. A., primary
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- 2005
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8. Editorial: Choices and consequences in reproduction
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van den Akker, O. B. A., primary
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- 2005
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9. Leisure Activities and Adolescent Sexual Behaviour
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Van Den Akker, O. B. A., primary and Lees, S., additional
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- 2001
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10. Adoption in the age of reproductive technology
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Van Den Akker, O. B. A., primary
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- 2001
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11. Expectations and experiences of gamete donors and donor-conceived adults searching for genetic relatives using DNA linking through a voluntary register.
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van den Akker, O. B. A., Crawshaw, M. A., Blyth, E. D., and Frith, L. J.
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GAMETES , *ORGAN donor registries , *CONCEPTION , *QUESTIONNAIRES , *RELATIVES - Abstract
STUDY QUESTION: What are the experiences of donor-conceived adults and donors who are searching for a genetic link through the use of a DNA-based voluntary register service? SUMMARY ANSWER: Donor-conceived adults and donors held positive beliefs about their search and although some concerns in relation to finding a genetically linked relative were reported, these were not a barrier to searching. WHAT IS KNOWN ALREADY: Research with donor-conceived people has consistently identified their interest in learning about-and in some cases making contact with-their donor and other genetic relatives. However, donor-conceived individuals or donors rarely have the opportunity to act on these desires. STUDY DESIGN, SIZE, AND DURATION: A questionnaire was administered for online completion using Bristol Online Surveys. The survey was live for 3 months and responses were collected anonymously. PARTICIPANTS/MATERIALS, SETTING, AND METHODS: The survey was completed by 65 donor-conceived adults, 21 sperm donors and 5 oocyte donors who had registered with a DNA-based voluntary contact register in the UK. The questionnaire included socio-demographic questions, questions specifically developed for the purposes of this study and the standardized Aspects of Identity Questionnaire (AIQ). MAIN RESULTS AND THE ROLE OF CHANCE: Motivations for searching for genetic relatives were varied, with the most common reasons being curiosity and passing on information. Overall, participants who were already linked and those awaiting a link were positive about being linked and valued access to a DNA-based register. Collective identity (reflecting self-defining feelings of continuity and uniqueness), as assessed by the AIQ, was significantly lower for donor-conceived adults when compared with the donor groups (P < 0.05), but not significantly different between linked/not linked or length of time since disclosure of donor conception (all Ps > 0.05) for donor-conceived adults. LIMITATIONS, REASONS FOR CAUTION: Participants were members of a UK DNA-based registry which is unique. It was therefore not possible to determine how representative participants were of those who did not register for the service, those in other countries or of those who do not seek information exchange or contact. WIDER IMPLICATIONS OF THE FINDINGS: This is the first survey exploring the experiences of donor-conceived adults and donors using a DNA-based voluntary register to seek information about and contact with genetic relatives and the first to measure aspects of identity using standardized measures. Findings provide valuable information about patterns of expectations and experiences of searching through DNA linking, identity and of having contact in the context of donor conception that will inform future research, practice and policy development. STUDY FUNDING/COMPETING INTERESTS: No funding was obtained for this study. The authors have no competing interests to declare except for M.C. who was national adviser to UKDL from 2003-2013. TRIAL REGISTRATION NUMBER: Not applicable. [ABSTRACT FROM AUTHOR]
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- 2015
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12. Psychological adaptation and symptom distress in bone marrow transplant recipients
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Molassiotis, A., primary, Van Den Akker, O. B. A., additional, Milligan, D. W., additional, Goldman, J. M., additional, and Boughton, B. J., additional
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- 1996
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13. Something old, something new, something borrowed, and something Taboo
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Van Den Akker, O. B. A., primary
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- 1994
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14. A study of the effect of message framing on oocyte donation.
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Purewal, S., Akker, O. B. A van den, and van den Akker, O B A
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OVUM ,ORGAN donation ,WOMEN ,FAMILIES & psychology ,ATTITUDE (Psychology) ,BEHAVIOR therapy ,COMPARATIVE studies ,INTENTION ,INTERNET ,RESEARCH methodology ,MEDICAL cooperation ,PERSUASION (Rhetoric) ,MATHEMATICAL models of psychology ,RESEARCH ,SOCIAL skills ,EVALUATION research ,OVUM donation ,PATIENT selection - Abstract
Background: The aims of this study were to examine the effect of gain- and loss-framed messages on British and South East Asian women's intentions towards oocyte donation and to examine whether the components of the theory of planned behaviour influenced the relationship between framing and intentions.Methods: A total of 406 women participated in this study (mean age = 22, SD = 2.9). There were 211 participants in the gain condition and 195 in the loss condition.Results: An analysis of covariance found a main effect for framing (F(1, 402) = 6.3; P < 0.01) after controlling for existing attitudes towards oocyte donation and pre-message intentions to donate. Specifically, participants in the gain-framed condition were significantly more likely to report higher post-message intentions to donate oocytes than participants in the loss condition. However, the framing effect was only observed with British populations and not with women from South East Asia. Further, structural equation modelling analyses revealed lower levels of 'perceived behavioural control' (beta = -0.420, P < 0.03) and positive attitudes towards 'the importance of genetic ties between parent and child' (beta = 0.70, P < 0.001) were direct predictors of post-message intentions in the gain (but not loss) frame condition.Conclusion: Findings obtained from this study indicate that oocyte donation campaigns should consider using gain-framed messages in recruitment appeals and message frames should be matched to the target populations' perceived level of behavioural control. [ABSTRACT FROM AUTHOR]- Published
- 2009
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15. Systematic review of oocyte donation: investigating attitudes, motivations and experiences.
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Purewal, S. and Van den Akker, O. B. A.
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OVUM , *OVUM donation , *GAMETES , *INFERTILITY , *REPRODUCTIVE technology - Abstract
Background: The social and psychological factors determining intentions to donate gametes are important for clinics, policy-makers and recruitment campaigns. The aims of this systematic review were therefore to integrate the research findings regarding the psychosocial determinants of oocyte donation and extrapolate women's experiences of donation. Methods: A bibliographic search of English language publications of four computerized databases was undertaken with no time restriction set for publications. Results: A total of 64 studies met the inclusion criteria and were included in the review. The research syntheses revealed there were distinct differences between patient and non-patient (known, commercial, volunteer and potential) donors on demographic characteristics, motives for donation, and issues relating to disclosure and attitudes towards the resultant offspring. Further, studies have found that a significant proportion of oocyte donors and women from the general population were prepared to donate their oocytes as identifiable donors. Studies which have examined the experiences of donors report positive experiences of oocyte donation. However, a number of methodological limitations relating to the oocyte donation research literature have been identified in this systematic review. Conclusion: Differences between donor groups on a range of factors highlight the need for tailored psychosocial evaluation and counselling. The review has demonstrated that it is not useful to generalize across donor groups on various factors relating to oocyte donation. [ABSTRACT FROM AUTHOR]
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- 2009
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16. Attitudes and intentions towards volunteer oocyte donation.
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Purewal, S. and van den Akker, O. B. A.
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ORGAN donation , *OVUM , *STRUCTURAL equation modeling , *PARENTHOOD , *CHILDREN - Abstract
There is an acute shortage of donated oocytes in the UK and clinics are largely relying on shared donation. Shared donation of oocytes is not without its ethical and moral concerns. The aims of this study were therefore to investigate non-patient population attitudes towards oocyte donation and examine the link between oocyte donation intentions and reasons for parenthood using structural equation modelling (SEM). The survey population consisted of 349 women aged 27.8 4.7 years. Results revealed that approximately one-third of women would consider donating their oocytes as identifiable donors. SEM analyses indicated a significant direct effect of positive attitudes towards oocyte donation, high levels of social support and endorsement of less conventional reasons for parenthood to intentions to donate. Age, education and attitudes towards the importance of a genetic link between parent and child indirectly influenced intentions to donate oocytes. Intenders' less conventional perceptions of parenthood coincided with their positive beliefs about the importance of parenthood and children. Thus, results indicated that attitudes towards parenthood are an important factor underpinning the motivation for potential oocyte donation. [ABSTRACT FROM AUTHOR]
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- 2009
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17. PSYCHOLOGICAL ADAPTATION AND SYMPTOM DISTRESS IN BONE MARROW TRANSPLANT RECIPIENTS.
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Molassiotist, A., Van Den Akker, O. B. A., MiIIgan, D. W., Goldman, J. M., and Boughton, B. J.
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BONE marrow , *IMMUNE system , *HOSPITAL care , *BONE marrow transplantation , *SLEEP deprivation , *SLEEP disorders - Abstract
This prospective study was designed to measure changes in the psychological status, self-esteem, dependence on other people, physical symptom distress and coping during isolation for bone marrow transplantation (BMT). A sample of 26 BMT patients was assessed at four different points in time. Results indicated that high psychological morbidity was present the day before the transplant, which remained elevated throughout hospitalisation and even a month after discharge. Main distressing symptoms included changes in bowel patterns, fatigue, insomnia, poor appetite and poor concentration. Tension-anxiety and depression showed a non-significant decrease throughout hospitalisation, but anger-hostility and fatigue were increased, especially in the last assessment about a month after discharge from hospital. Activity levels declined over time. Dependence on others and self-esteem have shown no significant changes over time, although pie-transplant assessment showed low self-esteem and a high degree of dependence on others. Main coping mechanisms during isolation identified in the study were hope, directing attention, maintaining control over the situation and acceptance. Psychological disturbance during isolation had a `carry-over' effect even a month after discharge from hospital. Higher symptom distress was associated with higher mood disturbance. Different types of isolation during BMT were not associated with differential amounts of psychomorbidity. Finally, patients who received professional psychological support during BMT' demonstrated significantly lower mood disturbance compared with patients who did not receive psychological support. [ABSTRACT FROM AUTHOR]
- Published
- 1996
18. Organizational selection and assessment of women entering a surrogacy agreement in the UK.
- Author
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van den Akker, OBA and van den Akker, O B
- Abstract
In the UK, surrogacy procedures are unregulated and not monitored. Information concerning the selection and assessment of intended (the mother commissioning) and surrogate mothers (the mother carrying and delivering the baby) is therefore not generally available (BMA, 1996). It is important to determine what type of assessment is used, and how selection takes place within the organizations dealing with surrogate motherhood arrangements. The present survey enquired about the incidence, selection and assessment procedures of all registered surrogate and commissioning couples, and aimed to find out what advice and support is given. Eight organizations took part in the survey, six were clinics and two agencies dealing with surrogate arrangements. Two voluntary organizations/helplines were also surveyed, but their data are not relevant to the results presented here. An interview and questionnaire approach was used. Psychosocial assessment was minimally addressed by all organizations, and no fixed procedures for assessment and selection were employed. Despite this, few incidences of controversial cases were reported. Confidence in this practice could be increased in the future if both parties embarking on a surrogacy arrangement knew they were properly selected and assessed. A regulatory body could monitor consistent use of professional evidence-based criteria prior to arrangements. [ABSTRACT FROM PUBLISHER]
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- 1999
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19. Exploring factors having an impact on attitudes and motivations towards volunteering in the undergraduate nursing student population - A comparative study of the UK and Ghana.
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Dyson SE, Korsah KA, Liu LQ, O'Driscoll M, and van den Akker OBA
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- Attitude of Health Personnel, Ghana, Humans, Motivation, United Kingdom, Volunteers, Education, Nursing, Baccalaureate, Students, Nursing
- Abstract
This study explores attitudes and motivations towards volunteering in nursing students in Ghana compared with nursing students in the United Kingdom (UK). Ghana traditionally follows a western model of nurse education, with students studying programmes commensurate in theory and practice, making Ghana a suitable location for a comparative study. We explored similarities and differences in attitudes and motivation towards volunteering to challenge and inform our common place practice towards nursing pedagogy. Ghanaian students displayed positive attitudes towards volunteering, although these did not translate into increased motivation to volunteer while at university. Students reported financial constraints as reasons for not volunteering as did UK students, although Ghanaian students used available resources for daily living expenses, whereas UK students prioritised available resources to pay down student debt. Structured volunteering was absent from both Ghanaian and UK nursing programmes, despite its potential to increase the variety of social groups or situations to which students are exposed, to increase self-confidence and to encourage greater reflection on practice through doing. Structural challenges within countries may provide a better explanation of variation in student motivation towards volunteering, than cross-cultural variation in attitudes towards volunteering between countries., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
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- 2021
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20. Elective single-embryo transfer: persuasive communication strategies can affect choice in a young British population.
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van den Akker OB and Purewal S
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- Adult, Fear, Humans, Male, United Kingdom, Choice Behavior, Persuasive Communication, Single Embryo Transfer psychology
- Abstract
This study tested the effectiveness of the framing effect and fear appeals to inform young people about the risks of multiple births and the option of selecting elective single-embryo transfer (eSET). A non-patient student sample (age (mean±SD) 23±5.5 years; n=321) were randomly allocated to one of seven groups: (1) framing effect: (1a) gain and (1b) loss frame; (2) fear appeal: (2a) high, (2b) medium and (2c) low fear; or (3) a control group: (3a) education and (3b) non-education. The primary outcome measure was the Attitudes towards Single Embryo Transfer questionnaire, before exposure to the messages (time 1) and immediately afterwards (time 2). Results revealed participants in the high fear, medium fear and gain condition demonstrated the most positive and significant differences (P<0.001 to P<0.05) in their knowledge, hypothetical intentions and modest changes in attitudes towards eSET than the low fear, loss frame and education and non-education messages. The results demonstrate that the use of complex persuasive communication techniques on a student population to promote immediate and hypothetical eSET preferences is more successful at promoting eSET than merely reporting educational content. Future research should investigate its application in a clinical population. A multiple pregnancy is a health risk to both infant and mother following IVF treatment. The aims of this study were to test the effectiveness of two persuasive communication techniques (the framing effect and fear appeals) to inform young people about the risks of multiple births and the hypothetical option of selecting elective single-embryo transfer (eSET) (i.e., only one embryo is transferred to the uterus using IVF treatment). A total of 321 non-patient student sample (mean age 23) were randomly allocated to read a message from one of seven groups: (1) framing effect: (1a) gain and (1b) loss frame; (2) fear appeal: (2a) high, (2b) medium and (2c) low fear; or (3) a control group: education (3a) and (3b) non-education. Participants completed the Attitudes towards Single Embryo Transfer questionnaire, before exposure to the messages (time 1) and immediately afterwards (time 2). Results revealed that participants in the high fear, medium fear and gain condition demonstrated the most positive and significant differences in their knowledge, hypothetical intentions and modest changes in attitudes towards eSET than the low fear, loss frame and education and non-education messages. This study recommends that health promotion based on the framing effect and fear appeals should be tested in clinical (patient) samples in the future., (Copyright © 2011 Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2011
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21. British women's attitudes to surrogacy.
- Author
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Poote AE and van den Akker OB
- Subjects
- Adult, Female, Humans, Middle Aged, Pregnancy, Socioeconomic Factors, United Kingdom, Attitude, Public Opinion, Gestational Carriers psychology, Women psychology
- Abstract
Background: There has been little interest in the research literature on public opinions regarding assisted conception and surrogacy, particularly in European countries, despite the growing evidence showing that problems in adaptation and coping may be related to perceived normative values. This study investigated British women's attitudes to surrogacy using components of the theory of planned behaviour (TPB)., Methods: Questionnaires on attitudes to surrogacy and reasons for parenthood were completed by 187 women from the general public., Results: Significant socio-demographic differences were found between women who were possibly willing (n = 76) and those who were unwilling (n = 111) to become surrogate mothers. General attitudes to surrogacy also differed between groups (P = 0.000). This study supported the predictive utility of components of the TPB, and differentiated adequately between groups on attitudes to recruitment for surrogacy (P = 0.000), the consequences of surrogacy (P = 0.000), factors that induce people to become surrogates (P = 0.000), social support (P = 0.000), having personal control (P = 0.002) and reasons for parenthood (P = 0.000). Age (P = 0.000), attitudes to advertising (P = 0.02) and the consequences of surrogacy (P = 0.05) predicted (un)willingness to become a potential surrogate mother., Conclusions: Further research is needed with larger sample sizes of potential surrogates to determine whether the predictive attitudes reported here translate to actual behaviours. The larger group which was not interested in considering becoming a surrogate scored significantly more negatively on all attitudes towards surrogacy. The negative attitudes reported by the 'unwilling to consider being a surrogate' group may reflect attitudes held by the majority of the population and are likely to be influenced by reports of stigma associated with surrogacy.
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- 2009
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22. British women's attitudes towards oocyte donation: ethnic differences and altruism.
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Purewal S and van den Akker OB
- Subjects
- Adolescent, Adult, Analysis of Variance, Asia ethnology, Cross-Cultural Comparison, Cultural Diversity, Educational Status, Female, Health Knowledge, Attitudes, Practice, Humans, Internal-External Control, Nursing Methodology Research, Occupations, Oocyte Donation ethics, Oocyte Donation legislation & jurisprudence, Psychological Theory, Regression Analysis, Religion and Psychology, Surveys and Questionnaires, United Kingdom, White People education, Women education, Altruism, Attitude to Health ethnology, Oocyte Donation psychology, White People ethnology, Women psychology
- Abstract
Objective: This study assessed the importance of altruism and willingness to donate oocytes in British Asian and Caucasian samples. The Theory of Planned Behaviour (TPB) was used to test the importance of attitudes towards oocyte donation, normative and control beliefs to attitudes to donate oocytes., Method: One hundred and one participants (55% Asian, 45% Caucasian) completed questionnaires measuring altruism and attitudes to Oocyte donation. There were no socio-demographic differences between ethnic groups., Results: Few women were willing to donate oocytes, Asian women were least likely to donate oocytes, and altruism was not related to willingness to donate. Forty-one participants considered themselves 'possible' oocyte donors and 54 as definite 'non' donors. Possible donors reported significantly more positive attitudes towards egg donation; asking women to donate under various circumstances; to the consequences of donating their eggs; positively experiencing egg donation and to factors that would induce women to donate. Subjective norms and behavioural control also influenced intention to donate., Conclusion: A number of components of the TPB were able to predict possible oocyte donation, and non-oocyte donation., Practice Implications: This study provides some empirical support for specific factors influencing cultural differences in gamete donation in the UK. A future culturally appropriate targeted approach to donation education could redress the present imbalance in supply and demand of gametes in infertility treatment.
- Published
- 2006
- Full Text
- View/download PDF
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