Dr Michael Odutola

BMC Infect Dis 2019 Jan 7;19(1):27. Epub 2019 Jan 7.

Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA.

PLoS One 2018 6;13(12):e0208531. Epub 2018 Dec 6.

Department of Strategic Information and Research, Institute of Human Virology Nigeria, Abuja, Nigeria.

Glob Health Action 2018 ;11(1):1419033

o Health Challenges and Systems program , African Population and Health Research Center , Nairobi , Kenya.

Cancer epidemiology

http://europepmc.org/abstract/med/30037755

Journal of clinical epidemiology

http://europepmc.org/abstract/med/29679747

https://doi.org/10.1016/j.jclinepi.2018.04.012

Journal of Clinical Epidemiology

Abstract Objective We explored determinants of attrition a longitudinal cohort study in Nigeria. Study Design and Setting We enroled 1,020 women into a prospective study. Of these, 973 were eligible to return for follow-up. We investigated the determinants of attrition among eligible women using a sequential mixed methods design. We used logistic regression models to compare the baseline characteristics of responders and non-responders. At the end of the parent study, we conducted 4 focus group discussions and 8 key informant interviews with non-responders Results Of the 973 women included in the quantitative analysis, 26% were non-responders. From quantitative analysis, older women were less likely to drop out than younger women (reference: women ≤30 years; OR 0.46; 95%CI 0.30 – 0.70, p<0.001 women 31–44 years; and OR 0.31; 95%CI 0.17 – 0.56, p<0.001 women ≥45 years). HIV-positive women were also less likely to drop out of the study (OR 0.45; 95%CI 0.33 – 0.63, p<0.001). From qualitative analysis, contextual factors that influenced attrition were high cost of participation, therapeutic misconceptions, inaccurate expectations, spousal disapproval, unpleasant side effects, challenges in maintaining contact with participants and difficulties in locating the study clinic. Conclusion Several participant, research and environment related factors influence attrition. Retention strategies which address these barriers are important to minimize attrition. Keywords Retention; Attrition; Drop-out; Loss to follow-up; Withdrawal; Longitudinal studies Choose an option to locate/access this article: Purchase $35.95 Author Declaration We wish to confirm that there are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome. The final version of this manuscript has been approved by all named authors and there are no other persons who satisfy the criteria for authorship but are not listed. We confirm that we have given due consideration to the protection of intellectual property associated with this work and there are no impediments to publication. Corresponding author: Clement A. Adebamowo 725 W.Lombard Street, N640, Baltimore, Maryland, United States of America. † These authors contributed equally to the writing of this manuscript. © 2018 Elsevier Inc. All rights reserved. Note to users: Accepted manuscripts are Articles in Press that have been peer reviewed and accepted for publication by the Editorial Board of this publication. They have not yet been copy edited and/or formatted in the publication house style, and may not yet have the full ScienceDirect functionality, e.g., supplementary files may still need to be added, links to references may not resolve yet etc. The text could still change before final publication. Although accepted manuscripts do not have all bibliographic details available yet, they can already be cited using the year of online publication and the DOI, as follows: author(s), article title, Publication (year), DOI. Please consult the journal's reference style for the exact appearance of these elements, abbreviation of journal names and use of punctuation. When the final article is assigned to volumes/issues of the Publication, the Article in Press version will be removed and the final version will appear in the associated published volumes/issues of the Publication. The date the article was first made available online will be carried over.

ISBN 978- 978-955-030-2

Nigerian National System of Cancer Registries

This is an evaluation of population and hospital-based cancer registries in Nigeria conducted by the Federal Ministry of Health.

Global health action

http://europepmc.org/abstract/med/29336236

International journal of epidemiology

http://europepmc.org/abstract/med/28419249

Journal of Clinical Oncology

http://0.1200/JCO.2017.35.15_suppl.1510

Journal of Acquired Immune Deficiency Syndromes

Int J Epidemiol 2017 12;46(6):1745-1745j

Department of Epidemiology and Public Health.

Frontiers in oncology

http://europepmc.org/abstract/med/28971062

Front Oncol 2017 24;7:183. Epub 2017 Aug 24.

Institute of Human Virology, Abuja, Nigeria.

Frontiers in public health

http://europepmc.org/abstract/med/28770192

Front Public Health 2017 17;5:172. Epub 2017 Jul 17.

Institute of Human Virology Nigeria, Abuja, Nigeria.

National Cancer Control Programme, Department of Hospital Services, Federal Ministry of Health of Nigeria, Garki, Nigeria. ISBN: 978-978-963-909-0

Journal of Global Oncology 2 (3_suppl), 79s-79s

Cancer Epidemiol 2016 12 22;45:91-97. Epub 2016 Oct 22.

Institute of Human Virology, Abuja, Nigeria; Department of Epidemiology and Public Health, University of Maryland, Baltimore, USA; Marlene and Stewart Greenbaum Comprehensive Cancer Center and Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA.

National System of Cancer Registries of Nigeria. ISBN: 978- 978-955-030-2

https://nigeriancancerregistries.net/Cancer_in_Nigeria_2009-2013.pdf

Cancer epidemiology

http://europepmc.org/abstract/med/27780076

Frontiers in oncology

http://europepmc.org/abstract/med/27822455

Front Oncol 2016 24;6:216. Epub 2016 Oct 24.

Institute of Human Virology, Abuja, Nigeria; Department of Epidemiology and Public Health, Marlene and Stewart Greenebaum Comprehensive Cancer Center, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA.

BMC women's health

http://europepmc.org/abstract/med/27169666

BMC Womens Health 2016 05 11;16:25. Epub 2016 May 11.

Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.

Annals of Global Health 1 (81), 92

Cancer Epidemiol 2015 Dec 12;39(6):1060-5. Epub 2015 Sep 12.

Université Bordeaux, ISPED, Centre INSERM U897-Epidémiologie-Biostatistique, F-33000 Bordeaux, France; INSERM, ISPED, Centre INSERM U897-Epidémiologie-Biostatistique, F-33000 Bordeaux, France.

Cancer Epidemiology

Front Public Health 2015 30;3:186. Epub 2015 Jul 30.

Institute of Human Virology Nigeria , Abuja , Nigeria ; The Marlene and Stewart Greenebaum Cancer Centre, Institute of Human Virology, University of Maryland School of Medicine , Baltimore, MD , USA.

Frontiers in Public Health

http://europepmc.org/abstract/med/26284233

Asia-pacific Journal of Clinical Oncology 10, 208