University of Manitoba Scholarship

Permanent URI for this collection


This collection contains open access research publications authored or co-authored by University of Manitoba researchers. Content within this collection includes pre and post-print versions of articles and book chapters, conference proceedings and technical reports. MSpace is where faculty and students can deposit their research output to meet the open access requirements of grant funding agencies and other related mandates. Deposit is subject to copyright compliance, distribution license and other license restrictions that may be imposed on the work.

Before You Submit

All submissions are subject to content and MSpace policies. Submitters are required to acknowledge compliance with these and copyright and publication licences to successfully deposit. Go to My MSpace to begin the submission process and, when prompted, choose the University of Manitoba Scholarship collection. Unfinished or rejected submissions can be restarted by accessing My MSpace.


Recent Submissions

Now showing 1 - 5 of 2124
  • Item
    Open Access
    A randomized trial evaluating the utility of non-targeted biopsies for colorectal neoplasia detection in adults with inflammatory bowel disease: a pilot study protocol
    (2024-02-01) Murthy, Sanjay K.; Marderfeld, Luba; Fergusson, Dean; Ramsay, Tim; Bernstein, Charles N.; Nguyen, Geoffrey C.; Jairath, Vipul; Riddell, Robert
    Abstract Background Persons with inflammatory bowel diseases are at increased risk of developing colorectal cancer and require frequent colonoscopy surveillance. Guidelines recommend taking 30 to 40 non-targeted biopsies throughout the colorectum to detect “invisible” neoplasia in this setting, despite a lack of evidence supporting this practice. We sought to assess the utility of this practice through a randomized controlled trial. We first propose an internal pilot study to assess recruitment potential, protocol adherence and data capture to guide the full trial. Methods We have designed a multi-centre, parallel-group, non-inferiority randomized controlled trial to test the utility of non-targeted biopsies as an adjunct to colonoscopy surveillance for neoplasia detection in persons with inflammatory bowel disease involving the colorectum in routine clinical practice. Participants are randomized 1:1, stratified by study site, to either standard of care high-definition white-light colonoscopy with 32 to 40 non-targeted biopsies of non-neoplastic-appearing mucosa along with a sampling of abnormal-appearing mucosa (control group) or modified colonoscopy with targeted sampling alone (intervention group). The primary outcome for the full trial will be the proportion of persons with ≥ 1 neoplastic focus detected during colonoscopy. For the pilot phase, we will assess the feasibility of recruiting a minimum of 15% of the estimated sample size within 1 year, under identical conditions as the full trial, while maintaining ≥ 90–95% rate of protocol adherence and data capture. These participants will contribute data to the full trial. The trial is being conducted at 12 centres across Canada, with a total sample size of 1952 persons. Discussions The trial protocol has been approved by the ethics committees of all participating sites, and the pilot study has received funding through the Canadian Institutes of Health Research (PJT 159607). If feasibility metrics are met during the pilot phase, we will complete the full trial. The trial outcomes will contribute to update the practice guidelines in this area. Trial registration, NCT04067778.
  • Item
    Open Access
    Association between high-density lipoprotein cholesterol and lumbar bone mineral density in Chinese: a large cross-sectional study
    (2024-01-24) Sun, Yongbing; Qi, Xin; Wang, Xuan; Lin, Xinbei; Zhou, Yang; Du, Yawei; Liu, Ao; Lv, Xue; Zhou, Jing; Li, Zhonglin; Wu, Xiaoling; Zou, Zhi; Zhang, Michael; Zhu, Jiadong; Shang, Feifei; Li, Yongli; Li, Hao
    Abstract Background The association between lipid and bone metabolism, particularly the role of high-density lipoprotein cholesterol (HDL-C) in regulating bone mineral density (BMD), is of significant interest. Despite numerous studies, findings on this relationship remain inconclusive, especially since evidence from large, sexually diverse Chinese populations is sparse. This study, therefore, investigates the correlation between HDL-C and lumbar BMD in people of different genders using extensive population-based data from physical examinations conducted in China. Methods Data from a cross-sectional survey involving 20,351 individuals aged > = 20 years drawn from medical records of health check-ups at the Health Management Centre of the Henan Provincial People’s Hospital formed the basis of this study. The primary objective was to determine the correlation between HDL-C levels and lumbar BMD across genders. The analysis methodology included demographic data analysis, one-way ANOVA, subgroup analyses, multifactorial regression equations, smoothed curve fitting, and threshold and saturation effect analyses. Results Multifactorial regression analysis revealed a significant inverse relationship between HDL-C levels and lumbar BMD in both sexes, controlling for potential confounders (Male: β = -8.77, 95% CI -11.65 to -5.88, P < 0.001; Female: β = -4.77, 95% CI -8.63 to -0.90, P = 0.015). Subgroup and threshold saturation effect analyses indicated a stronger association in males, showing that increased HDL-C correlates with reduced lumbar BMD irrespective of age and body mass index (BMI). The most significant effect was observed in males with BMI > 28 kg/m2 and HDL-C > 1.45 mmol/L and in females with a BMI between 24 and 28 kg/m2. Conclusion Elevated HDL-C is associated with decreased bone mass, particularly in obese males. These findings indicate that individuals with high HDL-C levels should receive careful clinical monitoring to mitigate osteoporosis risk. Trial registration The research protocol received ethics approval from the Ethics Committee at Beijing Jishuitan Hospital, in conformity with the Declaration of Helsinki guidelines (No. 2015-12-02). These data are a contribution of the China Health Quantitative CT Big Data Research team, registered at (code: NCT03699228).
  • Item
    Open Access
    Scoping review on the link between economic growth, decent work, and early childhood caries
    (2024-01-13) Foláyan, Morẹ́nikẹ́ O.; Amalia, Rosa; Kemoli, Arthur; Ayouni, Imen; Nguweneza, Arthemon; Duangthip, Duangporn; Sun, Ivy G.; Virtanen, Jorma I.; Masumo, Ray M.; Vukovic, Ana; Al-Batayneh, Ola B.; Gaffar, Balgis; Mfolo, Tshepiso; Schroth, Robert J.; El Tantawi, Maha
    Abstract Background Early Childhood Caries (ECC) is a prevalent chronic non-communicable disease that affects millions of young children globally, with profound implications for their well-being and oral health. This paper explores the associations between ECC and the targets of the Sustainable Development Goal 8 (SDG 8). Methods The scoping review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR) guidelines. In July 2023, a search was conducted in PubMed, Web of Science, and Scopus using tailored search terms related to economic growth, decent work sustained economic growth, higher levels of productivity and technological innovation, entrepreneurship, job creation, and efforts to eradicate forced labor, slavery, and human trafficking and ECC all of which are the targets of the SDG8. Only English language publications, and publications that were analytical in design were included. Studies that solely examined ECC prevalence without reference to SDG8 goals were excluded. Results The initial search yielded 761 articles. After removing duplicates and ineligible manuscripts, 84 were screened. However, none of the identified studies provided data on the association between decent work, economic growth-related factors, and ECC. Conclusions This scoping review found no English publication on the associations between SDG8 and ECC despite the plausibility for this link. This data gap can hinder policymaking and resource allocation for oral health programs. Further research should explore the complex relationship between economic growth, decent work and ECC to provide additional evidence for better policy formulation and ECC control globally.
  • Item
    Open Access
    A study protocol for implementing Canadian Practice Guidelines for Treating Children and Adolescents with Eating Disorders
    (2024-01-05) Couturier, Jennifer L.; Kimber, Melissa; Ford, Catherine; Coelho, Jennifer S.; Dimitropoulos, Gina; Kurji, Ayisha; Boman, Jonathan; Isserlin, Leanna; Bond, Jason; Soroka, Chelsea; Dominic, Anna; Boachie, Ahmed; McVey, Gail; Norris, Mark; Obeid, Nicole; Pilon, David; Spettigue, Wendy; Findlay, Sheri; Geller, Josie; Grewal, Seena; Gusella, Joanne; Jericho, Monique; Johnson, Natasha; Katzman, Debra; Chan, Natalie; Grande, Chloe; Nicula, Maria; Clause-Walford, Drew; Leclerc, Anick; Loewen, Rachel; Loewen, Techiya; Steinegger, Cathleen; Waite, Elizabeth; Webb, Cheryl; Brouwers, Melissa
    Abstract Background Eating disorders have one of the highest mortality rates among psychiatric illnesses. Timely intervention is crucial for effective treatment, as eating disorders tend to be chronic and difficult to manage if left untreated. Clinical practice guidelines play a vital role in improving healthcare delivery, aiming to minimize variations in care and bridge the gap between research and practice. However, research indicates an active guideline implementation approach is crucial to effective uptake. Methods Mixed methods will be used to inform and evaluate our guideline implementation approach. Semi-structured focus groups will be conducted in each of the eight provinces in Canada. Each focus group will comprise 8–10 key stakeholders, including clinicians, program administrators, and individuals with lived experience or caregivers. Qualitative data will be analyzed using conventional content analysis and the constant comparison technique and the results will be used to inform our implementation strategy. The study will then evaluate the effectiveness of our implementation approach through pre- and post-surveys, comparing changes in awareness, use, and impact of the guidelines in various stakeholder groups. Discussion Through a multifaceted implementation strategy, involving the co-creation of educational materials, tailored training, and context-specific strategies, this study intends to enhance guideline uptake and promote adherence to evidence-based practices. Our study will also contribute valuable information on the impact of our implementation strategies.
  • Item
    Open Access
    Lifting the curtain on the emergency department crisis: a multi-method reception study of Larry Saves the Canadian Healthcare System
    (2024-01-04) Kreindler, Sara A.; Hunter, Mikayla; Lea, Graham W.; Archibald, Mandy; Rieger, Kendra; West, Christina; Hasan, Shaikh M.
    Abstract Background Despite growing evidence of the potential of arts-based modalities to translate knowledge and spark discussion on complex issues, applications to health policy are rare. This study explored the potential of a research-based theatrical video to increase public capacity and motivation to engage with the complex issues that make Emergency Department wait times such an intractable problem. Methods Larry Saves the Canadian Healthcare System is a digital musical micro-series developed from extensive research examining system-level causes of Emergency crowding and the ineffectiveness of prevailing approaches. We released individual episodes and a revised full-length version on YouTube, using organic promotion strategies and paid advertising. We used YouTube Analytics to track views, engagement and viewer demographics, and content-analyzed viewer comments. We also conducted five university-based screenings; 92 students completed questionnaires, rating Larry on 16 descriptors using a 7-point Likert scale. Results From June 2022 through May 2023, Larry garnered over 100,000 views (76,752 of the full-length version, 35,535 of episodes), 1329 likes, 2780 shares, and 139 comments. Views and watch time were higher among women and positively associated with age. Among YouTube comments, the predominating themes were praise for the video and criticism of the healthcare system. Many commenters applauded the show’s accuracy, humor, and/or resonance with their experience; several shared healthcare horror stories. Students overwhelmingly agreed with all positive and disagreed with all negative descriptors, and nearly unanimously deemed the video informative, thought-provoking, and entertaining. Most also affirmed that it had increased their knowledge, interest, and confidence to participate in discussions about healthcare issues. Neither gender, primary language, nor employment in healthcare predicted ratings, but graduate students and those 25+ years old evaluated the video most positively. Discussion These findings highlight the promise of research-informed musical satire to inform and invigorate discourse on an urgent health policy problem. Larry has reached tens of thousands of viewers, garnered excellent feedback, and received high student ratings. Further research should directly assess educational and behavioural outcomes and explore what facilitative strategies could maximize this knowledge translation product’s potential to foster informed, impactful policy dialogue.