Omar Omar

Research output

Research output per year 2013 2016 2018 2020 2023

• 30 Article
• 1 Letter

Research output per year

Research output per year

Search results

• 2023

  Strategies to minimise and monitor biases and imbalances by arm in surgical cluster randomised trials: evidence from ChEETAh, a trial in seven low- and middle-income countries

  NIHR Global Health Research Unit on Global Surgery & The Hospital Principle Investigator, 5 Apr 2023, In: Trials. 24, 1, 8 p., 259.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Income 100%
  • Random Allocation 52%
  • Randomized Controlled Trials 27%
  • Abdominal Wound Closure Techniques 23%
  • Health Care Outcome Assessment 17%
  12 Downloads (Pure)
• 2022

  Alcoholic chlorhexidine skin preparation or triclosan-coated sutures to reduce surgical site infection: a systematic review and meta-analysis of high-quality randomised controlled trials

  Ademuyiwa, A. O., Adisa, A. O., Bach, S., Bhangu, A., Harrison, E., Ingabire, J. A., Haque, P. D., Ismail, L., Glasbey, J., Ghosh, D., Kadir, B., Kamarajah, S. K., Li, E., Lillywhite, R., Mann, H., Martin, J., Ramos De La Madina, A., Moore, R., Morton, D., Nepogodiev, D., & 10 othersNtirenganya, F., Pinkney, T., Pockney, P., Omar, O., Simoes, J., Smart, N., Smith, D., Tabiri, S., Taylor, E. & Wilkin, R., 1 Aug 2022, In: The Lancet Infectious Diseases. 22, 8, p. 1242-1251 10 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Triclosan 100%
  • Chlorhexidine 84%
  • Surgical Wound Infection 78%
  • Sutures 63%
  • Meta-Analysis 51%
  49 Downloads (Pure)

• Projecting COVID-19 disruption to elective surgery

  COVIDSurg Collaborative, Nepogodiev, D., Abbott, T. EF., Ademuyiwa, A. O., AlAmeer, E., Bankhead-Kendall, B. K., Biccard, B. M., Chakrabortee, S., Chaudhry, D., Edwards, J. G., El-Boghdadly, K., Ghosh, D., Glasbey, J. C., Gujjuri, R. R., Harrison, E. M., Jones, C. S., Kaafarani, H. MA., Kamarajah, S. K., Kolias, A. G., Lawani, I., & 19 othersLi, E., Mann, H., Marson, E., Martin, J., Mclean, K. A., Minaya-Bravo, A., Moore, R., Ntirenganya, F., Omar, O. M., Pockney, P., Ramos-De la Medina, A., Shaw, R., Simões, J. FF., Smart, N. J., Sundar, S., Tabiri, S., Taylor, E. H., Venn, M. L. & Bhangu, A., Jan 2022, In: The Lancet. 399, 10321, p. 233-234 2 p.

  Research output: Contribution to journal › Letter › peer-review

• Study protocol for a cluster randomised trial of sterile glove and instrument change at the time of wound closure to reduce surgical site infection in low- and middle-income countries (CHEETAH)

  Ademuyiwa, A. O., Adisa, A. O., Bhangu, A., Brocklehurst, P., Chakrabortee, S., Ghosh, D., Glasbey, J., Haque, P. D., Hardy, P., Harrison, E., Ingabire, J. A., Ismail, L., Kadir, B., Lillywhite, R., Magill, L., De la medina, A. R., Moore, R., Monahan, M., Morton, D., Nepogodiev, D., & 6 othersNtirenganya, F., Omar, O., Pinkney, T., Smith, D., Tabiri, S. & Winkles, N., 9 Mar 2022, In: Trials. 23, 1, 14 p., 204.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Surgical Wound Infection 100%
  • Income 72%
  • Wounds and Injuries 43%
  • Ambulatory Surgical Procedures 34%
  • Length of Stay 26%
  24 Downloads (Pure)
• 2021

  Elective cancer surgery in COVID-19–free surgical pathways during the SARS-CoV-2 pandemic: an international, multicenter, comparative cohort study

  COVIDSurg Collaborative & Morton, D., 1 Jan 2021, In: Journal of Clinical Oncology . 39, 1, p. 66-78 13 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • SARS Virus 100%
  • Pandemics 72%
  • Cohort Studies 46%
  • Neoplasms 21%
  • Postoperative Complications 16%
  30 Citations (Scopus)

  254 Downloads (Pure)

• Preoperative nasopharyngeal swab testing and postoperative pulmonary complications in patients undergoing elective surgery during the SARS-CoV-2 pandemic

  COVIDSurg Collaborative, Jan 2021, In: British Journal of Surgery. 108, 1, p. 88-96 9 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • SARS Virus 100%
  • Pandemics 72%
  • Postoperative Complications 58%
  • Minor Surgical Procedures 45%
  • Lung 36%
  10 Citations (Scopus)

• UK Head and neck cancer surgical capacity during the second wave of the COVID—19 pandemic: have we learned the lessons? COVIDSurg collaborative

  COVIDSurg Collaborative, Jul 2021, In: Clinical Otolaryngology. 46, 4, p. 729-735 7 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Pandemics 100%
  • Head and Neck Neoplasms 94%
  • Ambulatory Care 10%
  • Tertiary Care Centers 9%
  • Critical Care 9%
  1 Citation (Scopus)

  231 Downloads (Pure)
• 2020

  Delphi prioritization and development of global surgery guidelines for the prevention of surgical-site infection

  Nepogodiev, D., Adisa, A., Abantanga, F. A., Ademuyiwa, A., Chakrabortee, S., Ghosh, D., Glasbey, J., Lapitan, M. C., Lawani, I., Maimbo, M., Moore, R., Morton, D., Ntirenganya, F., Qureshi, A. U., Ramos-De la Medina, A., Tabiri, S., Pinkney, T., Bhangu, A., Ademuyiwa, A., Adenekan, A., & 84 othersAdewunmi, A. S., Adisa, A., Aguilera, M. L., Bhangu, A., Biccard, B., Brocklehurst, P., Chakrabortee, S., Costa, A., Cotton, P., Davies, J., Drake, T. M., Garden, O. J., Ghosh, D., Glasbey, J., Haque, P. D., Harrison, E. M., Ingabire, J. D. L. C. A., Knight, S. R., Lapitan, M. C., Lawani, I., Lilford, R., Maimbo, M., Martin, J., Miguelena, L. H., Mittal, R., Moore, R., Msosa, V., Naqi, S. A., Nepogodiev, D., Ntirenganya, F., Olory-Togbe, J. L., Omar, O. M., Pinkney, T., Qureshi, A. U., Ramos-De la Medina, A., Salem, H. K., Smith, M., Sundar, S., Tabiri, S., Yenli, E., Yepez, R., Zoumenou, E., Abantanga, F. A., Ademuyiwa, A., Adewunmi, A. S., Adisa, A., Aguilera, M. L., Bhangu, A., Biccard, B., Brocklehurst, P., Chakrabortee, S., Costa, A., Drake, T. M., Ghosh, D., Glasbey, J., Haque, P. D., Harrison, E. M., Ingabire, J. D. L. C. A., Jones, C. S., Kajombo, C., Knight, S. R., Lapitan, M. C., Lawani, I., Lawday, S., Maimbo, M., Martin, J., Miguelena, L. H., Mittal, R., Moore, R., Msosa, V., Naqi, S. A., Nepogodiev, D., Ntirenganya, F., Nyundo, M., Olory-Togbe, J. L., Pinkney, T., Qureshi, A. U., la Medina, A. R. D., Parreno-Sacdalan, D., Salem, H. K., Smith, M., Tabiri, S., Yenli, E. & Zoumenou, E., 1 Jul 2020, In: British Journal of Surgery. 107, 8, p. 970-977 8 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  • Surgical Wound Infection 100%
  • Guidelines 57%
  • Income 26%
  • Hand Sanitizers 13%
  • Decontamination 10%
  6 Citations (Scopus)

• Pragmatic multicentre factorial randomized controlled trial testing measures to reduce surgical site infection in low- and middle-income countries: study protocol of the FALCON trial

  NIHR Global Health Research Unit on Global Surgery, 13 Sept 2020, (E-pub ahead of print) In: Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Surgical Wound Infection 100%
  • Income 72%
  • Sutures 69%
  • Randomized Controlled Trials 59%
  • Triclosan 54%
  3 Citations (Scopus)

  83 Downloads (Pure)

• The relationship between sleep duration and mood in adolescents: A systematic review and meta-analysis

  Short, M. A., Booth, S. A., Omar, O., Ostlundh, L. & Arora, T., Aug 2020, In: Sleep Medicine Reviews. 52, 12 p., 101311.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Sleep 100%
  • Meta-Analysis 95%
  • Systematic Reviews 94%
  • Anger 20%
  • PubMed 14%
  13 Citations (Scopus)

  783 Downloads (Pure)

• Two speeds of increasing milk feeds for very preterm or very low-birthweight infants: the SIFT RCT

  SIFT Investigators Group, Omar, O., Roberts, T., Tahir, W. & Monahan, M., 30 Apr 2020, In: Health Technology Assessment. 24, 18, 126 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Milk 100%
  • infant 89%
  • severe disability 59%
  • Necrotizing Enterocolitis 39%
  • Biomedical Technology Assessment 27%
  3 Citations (Scopus)

  186 Downloads (Pure)
• 2019

  Mesh versus suture repair of primary inguinal hernia in Ghana

  Tabiri, S., Owusu, F., Atindaana Abantanga, F., Moten, A., Nepogodiev, D., Omar, O. & Bhangu, A., Oct 2019, In: BJGP Open. 3, 5, p. 629-633 5 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Ghana 100%
  • Inguinal Hernia 94%
  • Sutures 73%
  • Recurrence 46%
  • Herniorrhaphy 36%
  224 Downloads (Pure)
• 2018

  Aspirin Use and Cardiovascular Outcome in Patients With Type 2 Diabetes Mellitus and Heart Failure: A Population-Based Cohort Study

  Abi Khalil, C., Omar, O. M., Al Suwaidi, J. & Taheri, S., 6 Nov 2018, In: Journal of the American Heart Association. 7, 21, p. e010033

  Research output: Contribution to journal › Article › peer-review

  • Aspirin 100%
  • Type 2 Diabetes Mellitus 81%
  • Heart Failure 79%
  • Cohort Studies 73%
  • Population 42%
  2 Citations (Scopus)

• Diabetes Intervention Accentuating Diet and Enhancing Metabolism (DIADEM-I): a randomised controlled trial to examine the impact of an intensive lifestyle intervention consisting of a low-energy diet and physical activity on body weight and metabolism in early type 2 diabetes mellitus: study protocol for a randomized controlled trial

  Taheri, S., Chagoury, O., Zaghloul, H., Elhadad, S., Ahmed, S. H., Omar, O., Payra, S., Ahmed, S., El Khatib, N., Amona, R. A., El Nahas, K., Bolton, M., Chaar, H., Suleiman, N., Jayyousi, A., Zirie, M., Janahi, I., Elhag, W., Alnaama, A., Zainel, A., & 7 othersHassan, D., Cable, T., Charlson, M., Wells, M., Al-Hamaq, A., Al-Abdulla, S. & Abou-Samra, A. B., 21 May 2018, In: Trials. 19, 1, p. 284

  Research output: Contribution to journal › Article › peer-review

  • Life Style 100%
  • Type 2 Diabetes Mellitus 92%
  • Body Weight 87%
  • Diet 84%
  • Randomized Controlled Trials 82%
  4 Citations (Scopus)

• Factors associated with presenteeism at work in Type 2 Diabetes Mellitus

  Zaghloul, H., Omar, O., Pallayova, M., Choudhury, S. & Taheri, S., 1 Dec 2018, In: Journal of Occupational and Environmental Medicine. 60, 12, p. 1116-1119 4 p.

  Research output: Contribution to journal › Article › peer-review

  • Presenteeism 100%
  • chronic illness 64%
  • Type 2 Diabetes Mellitus 49%
  • Mental Health 25%
  • Anxiety 23%
  4 Citations (Scopus)

• Selected psychiatric problems among college students in two Arab countries: comparison with the USA

  Kronfol, Z., Khalifa, B., Khoury, B., Omar, O., Daouk, S., deWitt, J. P., ElAzab, N. & Eisenberg, D., 24 May 2018, In: BMC Psychiatry. 18, 1, p. 147

  Research output: Contribution to journal › Article › peer-review

  • Psychiatry 100%
  • Students 94%
  • Feeding and Eating Disorders 71%
  • Qatar 66%
  • Lebanon 61%
  12 Citations (Scopus)

• The associations among objectively estimated sleep and obesity indicators in elementary schoolchildren

  Arora, T., Gad, H., Omar, O. M., Choudhury, S., Chagoury, O., Sheikh, J. & Taheri, S., Jul 2018, In: Sleep Medicine. 47, p. 25-31 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Sleep 100%
  • Obesity 89%
  • Pediatric Obesity 51%
  • Overweight 42%
  • Life Style 26%
  2 Citations (Scopus)

• The prospective association between electronic device use before bedtime and academic attainment in adolescents

  Arora, T., Albahri, A., Omar, O. M., Sharara, A. & Taheri, S., 1 Oct 2018, In: Journal of Adolescent Health. 63, 4, p. 451-458 8 p.

  Research output: Contribution to journal › Article › peer-review

  • video 100%
  • Cell Phone 98%
  • electronics 94%
  • telephone 93%
  • Social Networking 91%
  3 Citations (Scopus)

• The relationship of perivascular adipose tissue and atherosclerosis in the aorta and carotid arteries, determined by magnetic resonance imaging

  Alkhalil, M., Edmond, E., Edgar, L., Digby, J. E., Omar, O., Robson, M. D. & Choudhury, R. P., Jul 2018, In: Diabetes and Vascular Disease Research. 15, 4, p. 286-293 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Carotid Arteries 100%
  • Aorta 89%
  • Adipose Tissue 85%
  • Atherosclerosis 82%
  • Magnetic Resonance Imaging 67%
  9 Citations (Scopus)
• 2017

  Effect of MRI on preterm infants and their families: a randomised trial with nested diagnostic and economic evaluation

  Edwards, A. D., Redshaw, M. E., Kennea, N., Rivero-Arias, O., Gonzales-Cinca, N., Nongena, P., Ederies, M., Falconer, S., Chew, A., Omar, O., Hardy, P., Harvey, M. E., Eddama, O., Hayward, N., Wurie, J., Azzopardi, D., Rutherford, M. A., Counsell, S. & ePrime Investigators, 7 Oct 2017, (E-pub ahead of print) In: Archives of disease in childhood. Fetal and neonatal edition.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Premature Infants 100%
  • Cost-Benefit Analysis 89%
  • Anxiety 74%
  • Costs and Cost Analysis 48%
  • Equipment and Supplies 46%
  43 Citations (Scopus)

  212 Downloads (Pure)

• Investigating physiological glucose excursions before, during, and after Ramadan in adults without diabetes mellitus

  Pallayova, M., Zaghloul, H. B., Arora, T., Choudhury, S. M., Omar, O. M., Chagoury, O. L. & Taheri, S., 1 Oct 2017, In: Physiology and Behavior. 179, p. 110-115 6 p.

  Research output: Contribution to journal › Article › peer-review

  • Diabetes Mellitus 100%
  • Glucose 79%
  • Body Mass Index 12%
  • Meals 8%
  • Reading 7%
  6 Citations (Scopus)

• Perceptions and attitudes to clinical research participation in Qatar

  Tohid, H., Choudhury, S. M., Agouba, S., Aden, A., Ahmed, L. H. M., Omar, O., Chagoury, O. & Taheri, S., Dec 2017, In: Contemporary Clinical Trials Communications. 8, p. 241-247 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Qatar 100%
  • Altruism 8%
  • Clinical Studies 8%
  • Health Services Accessibility 7%
  • Fear 5%
  12 Citations (Scopus)
• 2016

  An investigation of the associations among sleep duration and quality, body mass index and insulin resistance in newly diagnosed type 2 diabetes mellitus patients

  Arora, T., Chen, M. Z., Omar, O. M., Cooper, A. R., Andrews, R. C. & Taheri, S., Feb 2016, In: Therapeutic Advances in Endocrinology and Metabolism. 7, 1, p. 3-11 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Insulin Resistance 100%
  • Sleep 95%
  • Type 2 Diabetes Mellitus 91%
  • Body Mass Index 87%
  • Body Weights and Measures 20%
  14 Citations (Scopus)

• Assessment for the possibility of a first night effect for wrist actigraphy in adolescents

  Arora, T., Omar, O. M. & Taheri, S., 3 Oct 2016, In: BMJ open. 6, 10, p. e012172

  Research output: Contribution to journal › Article › peer-review

  • Actigraphy 100%
  • Wrist 71%
  • Sleep 57%
  • Sleep Latency 8%
  • Polysomnography 7%
  3 Citations (Scopus)

• How Do Qataris Source Health Information?

  Choudhury, S. M., Arora, T., Alebbi, S., Ahmed, L., Aden, A., Omar, O. & Taheri, S., 2016, In: PLoS ONE. 11, 11, p. e0166250

  Research output: Contribution to journal › Article › peer-review

  • health information 100%
  • Qatar 56%
  • Internet 40%
  • health services 39%
  • Health 32%
  8 Citations (Scopus)

• Impact of a web-based tool (WebCONSORT) to improve the reporting of randomised trials: results of a randomised controlled trial

  Hopewell, S., Boutron, I., Altman, D. G., Barbour, G., Moher, D., Montori, V., Schriger, D., Cook, J., Gerry, S., Omar, O., Dutton, P., Roberts, C., Frangou, E., Clifton, L., Chiocchia, V., Rombach, I., Wartolowska, K. & Ravaud, P., 28 Nov 2016, In: BMC medicine. 14, 1, p. 199

  Research output: Contribution to journal › Article › peer-review

  • Manuscripts 100%
  • Randomized Controlled Trials 58%
  • Checklist 41%
  • Publications 23%
  • Guidelines 9%
  28 Citations (Scopus)

• Moderate hypothermia within 6 h of birth plus inhaled xenon versus moderate hypothermia alone after birth asphyxia (TOBY-Xe): a proof-of-concept, open-label, randomised controlled trial

  Azzopardi, D., Robertson, N. J., Bainbridge, A., Cady, E., Charles-Edwards, G., Deierl, A., Fagiolo, G., Franks, N. P., Griffiths, J., Hajnal, J., Juszczak, E., Kapetanakis, B., Linsell, L., Maze, M., Omar, O., Strohm, B., Tusor, N. & Edwards, A. D., Feb 2016, In: The Lancet Neurology. 15, 2, p. 145-153 9 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Xenon 100%
  • Asphyxia 83%
  • Hypothermia 76%
  • Parturition 50%
  • Randomized Controlled Trials 49%
  108 Citations (Scopus)

  113 Downloads (Pure)
• 2014

  Association between population prevalence of smoking and incidence of meningococcal disease in Norway, Sweden, Denmark and the Netherlands between 1975 and 2009: a population-based time series analysis

  Norheim, G., Sadarangani, M., Omar, O., Yu, L-M., Mølbak, K., Howitz, M., Olcén, P., Haglund, M., van der Ende, A. & Pollard, A. J., 10 Feb 2014, In: BMJ open. 4, 11 p., e003312.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Meningococcal Infections 100%
  • Norway 81%
  • Denmark 80%
  • Sweden 74%
  • Netherlands 73%
  11 Citations (Scopus)

  104 Downloads (Pure)

• Effects of hypothermia for perinatal asphyxia on childhood outcomes

  Azzopardi, D., Strohm, B., Marlow, N., Brocklehurst, P., Deierl, A., Eddama, O., Goodwin, J., Halliday, H. L., Juszczak, E., Kapellou, O., Levene, M., Linsell, L., Omar, O., Thoresen, M., Tusor, N., Whitelaw, A., Edwards, A. D. & TOBY Study Group, 10 Jul 2014, In: The New England Journal of Medicine. 371, 2, p. 140-149 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Asphyxia 100%
  • Hypothermia 92%
  • Brain Diseases 35%
  • Child 27%
  • Control Groups 27%
  357 Citations (Scopus)

• Randomized clinical trial to evaluate the immunogenicity of quadrivalent meningococcal conjugate and polysaccharide vaccines in adults in the United kingdom

  Ramasamy, M. N., Clutterbuck, E. A., Haworth, K., Bowman, J., Omar, O., Thompson, A. J., Blanchard-Rohner, G., Yu, L-M., Snape, M. D. & Pollard, A. J., Aug 2014, In: Clinical and Vaccine Immunology. 21, 8, p. 1164-8 5 p.

  Research output: Contribution to journal › Article › peer-review

  • Meningococcal Vaccines 100%
  • Conjugate Vaccines 84%
  • Polysaccharides 64%
  • Polysaccharide 58%
  • Vaccines 51%
  8 Citations (Scopus)
• 2013

  Long-term seroprotection after an adolescent booster meningococcal serogroup C vaccination

  de Whalley, P. C. S., Snape, M. D., Plested, E., Thompson, B., Nuthall, E., Omar, O., Borrow, R. & Pollard, A. J., Sept 2013, In: Archives of Disease in Childhood. 98, 9, p. 686-91 6 p.

  Research output: Contribution to journal › Article › peer-review

  • Serogroup 100%
  • Vaccination 87%
  • Meningococcal Vaccines 80%
  • Glycoconjugates 70%
  • Vaccines 61%
  19 Citations (Scopus)