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Dive into the research topics where Sheona M. Mitchell is active.

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Featured researches published by Sheona M. Mitchell.


International Journal of Gynecology & Obstetrics | 2011

Assessing women's willingness to collect their own cervical samples for HPV testing as part of the ASPIRE cervical cancer screening project in Uganda

Sheona M. Mitchell; Gina S. Ogilvie; Malcolm Steinberg; Musa Sekikubo; Christine Biryabarema; Deborah M. Money

To assess womens willingness to collect their own samples for HPV testing as the first part of a screening program for cervical cancer in Uganda.


Best Practice & Research in Clinical Obstetrics & Gynaecology | 2015

The worldwide epidemic of female obesity

Sheona M. Mitchell; Dorothy Shaw

The rapidly rising number of individuals who are overweight and obese has been called a worldwide epidemic of obesity with >35% of adults today considered to be overweight or obese. Women are more likely to be overweight and obese than their male counterparts, which has far-reaching effects on reproductive health and specifically pregnancy, with obese women facing an increased risk of gestational diabetes, preeclampsia, operative delivery, fetal macrosomia, and neonatal morbidity. The etiology of obesity is highly complex encompassing genetic, environmental, physiologic, cultural, political, and socioeconomic factors, making it challenging to develop effective interventions on both a local and global scale. This article describes the extent and the cost of the obesity epidemic, which, although historically seen as a disease of high-income countries, is now clearly a global epidemic that impacts low- and middle-income countries and indigenous groups who bear an ever-increasing burden of this disease.


International Journal of Gynecology & Obstetrics | 2013

Results of a community-based cervical cancer screening pilot project using human papillomavirus self-sampling in Kampala, Uganda

Gina Ogilvie; Sheona M. Mitchell; Musa Sekikubo; Christine Biryabarema; Josaphat Byamugisha; Jose Jeronimo; Dianne Miller; Malcolm Steinberg; Deborah M. Money

To examine the feasibility of a community‐based screening program using human papillomavirus (HPV) self‐sampling in a low‐income country with a high burden of cervical cancer.


American Journal of Obstetrics and Gynecology | 2014

Factors associated with high-risk HPV positivity in a low-resource setting in sub-Saharan Africa

Sheona M. Mitchell; Musa Sekikubo; Christine Biryabarema; Josaphat Byamugisha; Malcolm Steinberg; Jose Jeronimo; Deborah M. Money; Jan Christilaw; Gina S. Ogilvie

OBJECTIVE We sought to determine demographic and behavioral factors associated with human papillomavirus (HPV) positivity in a community-based HPV self-collection cervical cancer screening pilot project. STUDY DESIGN HPV self-collected samples were obtained from 199 women aged 30-69 years in the impoverished urban Ugandan community of Kisenyi, during September through November 2011. Demographic and behavioral information was collected. Descriptive statistics and a logistic regression model were used to analyze factors associated with HPV positivity. RESULTS There was overwhelming acceptance of HPV self-collection in this community. High-risk HPV prevalence was found to be 17.6%. Lower levels of formal education (adjusted odds ratio [AOR], 0.40; 95% confidence interval [CI], 0.08-2.03) were associated with higher prevalence of HPV as was use of oral contraception (AOR, 2.01; 95% CI, 0.83-4.90) and human immunodeficiency virus status (AOR, 0.43; 95% CI, 0.14-1.37). CONCLUSION Screening should be targeted and prioritized for women with lower levels of education, oral contraceptive use, and human immunodeficiency virus positivity as they have the highest HPV prevalence in this low-resource population.


Tropical Medicine & International Health | 2015

Uptake of community-based, self-collected HPV testing vs. visual inspection with acetic acid for cervical cancer screening in Kampala, Uganda: preliminary results of a randomised controlled trial

Erin Moses; Heather N. Pedersen; Sheona M. Mitchell; Musa Sekikubo; David Mwesigwa; Joel Singer; Christine Biryabarema; Josaphat Byamugisha; Deborah M. Money; Gina Ogilvie

To compare two cervical cancer screening methods: community‐based self‐collection of high‐risk human papillomavirus (HR‐HPV) testing and visual inspection with acetic acid (VIA).


BMJ Open | 2014

Understanding the role of embarrassment in gynaecological screening: a qualitative study from the ASPIRE cervical cancer screening project in Uganda

Flora F. Teng; Sheona M. Mitchell; Musa Sekikubo; Christine Biryabarema; Josaphat Byamugisha; Malcolm Steinberg; Deborah M. Money; Gina S. Ogilvie

Objective To define embarrassment and develop an understanding of the role of embarrassment in relation to cervical cancer screening and self-collected human papillomavirus (HPV) DNA testing in Uganda. Design Cross-sectional, qualitative study using semistructured one-to-one interviews and focus groups. Participants 6 key-informant health workers and 16 local women, purposively sampled. Key informant inclusion criteria: Ugandan members of the project team. Focus group inclusion criteria: woman age 30–69 years, Luganda or Swahili speaking, living or working in the target Ugandan community. Exclusion criteria: unwillingness to sign informed consent. Setting Primary and tertiary low-resource setting in Kampala, Uganda. Results In Luganda, embarrassment relating to cervical cancer is described in two forms. ‘Community embarrassment’ describes discomfort based on how a person may be perceived by others. ‘Personal embarrassment’ relates to shyness or discomfort with her own genitalia. Community embarrassment was described in themes relating to place of study recruitment, amount of privacy in dwellings, personal relationship with health workers, handling of the vaginal swab and misunderstanding of HPV self-collection as HIV testing. Themes of personal embarrassment related to lack of knowledge, age and novelty of the self-collection swab. Overall, embarrassment was a barrier to screening at the outset and diminished over time through education and knowledge. Fatalism regarding cervical cancer diagnosis, worry about results and stigma associated with a cervical cancer diagnosis were other psychosocial barriers described. Overcoming psychosocial barriers to screening can include peer-to-peer education, drama and media campaigns. Conclusions Embarrassment and other psychosocial barriers may play a large role at the onset of a screening programme, but over time as education and knowledge increase, and the social norms around screening evolve, its role diminishes. The role of peer-to-peer education and community authorities on healthcare cannot be overlooked and can have a major impact in overcoming psychosocial and social barriers to screening.


International Journal of Cancer | 2017

Cost-effectiveness of cervical cancer screening methods in low- and middle-income countries: A systematic review

Alex Mezei; Heather L. Armstrong; Heather N. Pedersen; Nicole G. Campos; Sheona M. Mitchell; Musa Sekikubo; Josaphat Byamugisha; Jane J. Kim; Stirling Bryan; Gina Ogilvie

The incidence of cervical cancer in low‐ and middle‐income countries (LMICs) is five times higher than that observed in high‐income countries (HICs). This discrepancy is largely attributed to the implementation of cytology‐based screening programmes in HICs. However, due to reduced health system infrastructure requirements, HPV testing (self‐ and provider‐collected) and visual inspection with acetic acid (VIA) have been proposed as alternatives that may be better suited to LMICs. Knowing the relative value of different screening options can inform policy and the development of sustainable prevention programs. We searched MEDLINE and EMBASE for English language publications detailing model‐based cost‐effectiveness analyses of cervical cancer screening methods in LMICs from 2000 to 2016. The main outcome of interest was the incremental cost‐effectiveness ratio (ICER). Quantitative data were extracted to compare commonly evaluated screening methods and a descriptive review was conducted for each included study. Of the initial 152 articles reviewed, 19 met inclusion criteria. Generally, cytology‐based screening was shown to be the least effective and most costly screening method. Whether provider‐collected HPV testing or VIA was the more efficient alternative depended on the cost of the HPV test, loss to follow‐up and VIA test performance. Self‐collected HPV testing was cost‐effective when it yielded population coverage gains over other screening methods. We conclude that HPV testing and VIA are more cost‐effective screening methods than cytology in LMICs. Policy makers should consider HPV testing with self‐collection of samples if it yields gains in population coverage.


Frontiers in Oncology | 2016

Strategies for community education prior to clinical trial recruitment for a cervical cancer screening intervention in Uganda

Sheona M. Mitchell; Heather N. Pedersen; Musa Sekikubo; Christine Biryabarema; Josaphat Byamugisha; David Mwesigwa; Malcolm Steinberg; Deborah M. Money; Gina Ogilvie

Introduction Community engagement and education can improve acceptability and participation in clinical trials conducted in Kisenyi, Uganda. In preparation for a randomized controlled trial exploring different methods for cervical cancer screening, we explored optimal engagement strategies from the perspective of community members and health professionals. Methods We conducted key informant interviews followed by serial community forums with purposeful sampling and compared the perspectives of women in Kisenyi (N = 26) to health-care workers (HCW) at the local and tertiary care center levels (N = 61) in a participatory, iterative process. Results Key themes identified included format, content, language, message delivery, and target population. Women in Kisenyi see demonstration as a key part of an educational intervention and not solely a didactic session, whereas health professionals emphasized the biomedical content and natural history of cervical cancer. Using local language and lay leaders with locally accessible terminology was more of a priority for women in Kisenyi than clinicians. Simple language with a clear message was essential for both groups. Localization of language and reciprocal communication using demonstration between community members and HCW was a key theme. Conclusion Although perceptions of the format are similar between women and HCW, the content, language, and messaging that should be incorporated in a health education strategy differ markedly. The call for lay leaders to participate in health promotion is a clear step toward transforming this cervical cancer screening project to be a fully participatory process. This is important in scaling up cervical cancer screening programs in Kisenyi and will be central in developing health education interventions for this purpose.


BMC Women's Health | 2017

Self-collection based HPV testing for cervical cancer screening among women living with HIV in Uganda: a descriptive analysis of knowledge, intentions to screen and factors associated with HPV positivity

Sheona M. Mitchell; Heather N. Pedersen; Evelyn Eng Stime; Musa Sekikubo; Erin Moses; David Mwesigwa; Christine Biryabarema; Jan Christilaw; Josaphat Byamugisha; Deborah M. Money; Gina Ogilvie

BackgroundWomen living with HIV (WHIV) are disproportionately impacted by cervical dysplasia and cancer. The burden is greatest in low-income countries where limited or no access to screening exists. The goal of this study was to describe knowledge and intentions of WHIV towards HPV self-collection for cervical cancer screening, and to report on factors related to HPV positivity among women who participated in testing.MethodsA validated survey was administered to 87 HIV positive women attending the Kisenyi Health Unit aged 30–69 years old, and data was abstracted from chart review. At a later date, self-collection based HPV testing was offered to all women. Specimens were tested for high risk HPV genotypes, and women were contacted with results and referred for care. Descriptive statistics, Chi Square and Fischer-exact statistical tests were performed.ResultsThe vast majority of WHIV (98.9%) women did not think it necessary to be screened for cervical cancer and the majority of women had never heard of HPV (96.4%). However, almost all WHIV found self-collection for cervical cancer screening to be acceptable. Of the 87 WHIV offered self-collection, 40 women agreed to provide a sample at the HIV clinic. Among women tested, 45% were oncogenic HPV positive, where HPV 16 or 18 positivity was 15% overall.ConclusionsIn this group of WHIV engaged in HIV care, there was a high prevalence of oncogenic HPV, a large proportion of which were HPV genotypes 16 or 18, in addition to low knowledge of HPV and cervical cancer screening. Improved education and cervical cancer screening for WHIV are sorely needed; self-collection based screening has the potential to be integrated with routine HIV care in this setting.


Sexually Transmitted Infections | 2013

P5.040 Integration of Gonorrhoea and Chlamydia Self-Collection Service Within an Existing Reproductive Health Programme in Kampala, Uganda

Sheona M. Mitchell; Musa Sekikubo; Christine Biryabarema; Josaphat Byamugisha; Malcolm Steinberg; J Christilaw; Deborah M. Money; Gina S. Ogilvie

Background Sub-Saharan Africa has the highest rates of curable sexually transmitted infections (STIs) globally with the greatest morbidity due to Neisseria gonorrhoea and Chlamydia trachomatis falling on women. In response to a demand for comprehensive reproductive health screening, we proposed that providing additional N. gonorrhoea and C. trachomatis testing within a cervical cancer screening programme involving self swabbing for HPV, would be acceptable and effective. Methods As part of a cervical cancer screening project in Kisenyi, a densely populated urban community in Kampala, Uganda with low socio-economic-indicators, women aged 30 to 69 were offered N. gonorrhoea and C. trachomatis testing using self-collected swabs. Women were recruited in each sub-division by local health workers, after informed consent, a brief demographic and attitudes survey was completed and the method of swab collection was explained. Specimens were transported for PCR analysis within Kampala. Participants were contacted by mobile phone and asked to attend the local health clinic to receive appropriate treatment if found to be positive. Results Out of 206 women approached, 203 provided a self collected swab for analysis. Twenty-six women (13%) were found to have C. trachomatis, 2 (< 1%) were positive for N. gonorrhoea and one participant was co-infected. Of the women infected, 76% were successfully contacted and of these 62% attended follow-up to receive appropriate treatment. Women reporting no condom use in the last month accounted for 93% of those with C. trachomatis while use of the oral contraceptive pill was not associated with higher rates of either infection. The self-reported HIV positivity rate was 9.5%. Discussion The acceptance and uptake of testing for common STIs in this urban sub-Saharan environment was very positive. Due to the high burden of disease inferred by these easily treated infections, further integration of appropriate screening should be incorporated into existing reproductive health programmes.

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Deborah M. Money

University of British Columbia

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Gina Ogilvie

University of British Columbia

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Heather N. Pedersen

University of British Columbia

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Gina S. Ogilvie

Centers for Disease Control and Prevention

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Dorothy Shaw

University of British Columbia

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Joel Singer

University of British Columbia

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