Omar Omar

Medical Statistician

  • 1045 Citations
  • 11 h-Index
20112020
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Research Output 2011 2020

  • 1045 Citations
  • 11 h-Index
  • 24 Article
  • 3 Review article
  • 1 Comment/debate
Article
10 Citations (Scopus)
Type 2 Diabetes Mellitus
Insulin Resistance
Sleep
Body Mass Index
Body Weights and Measures
1 Citation (Scopus)
Type 2 Diabetes Mellitus
Aspirin
Cohort Studies
Heart Failure
Population
1 Citation (Scopus)

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

Arora, T., Omar, O. & Taheri, S., 1 Oct 2016, In : BMJ Open. 6, 10, e012172.

Research output: Contribution to journalArticle

Actigraphy
Wrist
Sleep
Polysomnography
8 Citations (Scopus)

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., 4 Mar 2014, In : BMJ Open. 4, 2, e003312.

Research output: Contribution to journalArticle

Denmark
Norway
Sweden
Netherlands
Smoking
43 Citations (Scopus)

A systematic review of the effect of red blood cell transfusion on mortality: Evidence from large-scale observational studies published between 2006 and 2010

Hopewell, S., Omar, O., Hyde, C., Yu, L. M., Doree, C. & Murphy, M. F., 6 Jun 2013, In : BMJ Open. 3, 5, 002154.

Research output: Contribution to journalArticle

Erythrocyte Transfusion
Observational Studies
Mortality
MEDLINE
Case-Control Studies
1 Citation (Scopus)

Controlled trial of two incremental milk-feeding rates in preterm infants

Dorling, J., Abbott, J., Berrington, J., Bosiak, B., Bowler, U., Boyle, E., Embleton, N., Hewer, O., Johnson, S., Juszczak, E., Leaf, A., Linsell, L., McCormick, K., McGuire, W., Omar, O., Partlett, C., Patel, M., Roberts, T., Stenson, B. & Townend, J., 10 Oct 2019, In : New England Journal of Medicine. 381, 15, p. 1434-1443 10 p.

Research output: Contribution to journalArticle

Premature Infants
Necrotizing Enterocolitis
Milk
Sepsis
Very Low Birth Weight Infant
220 Citations (Scopus)

Developing risk prediction models for type 2 diabetes: A systematic review of methodology and reporting

Collins, G. S., Mallett, S., Omar, O. & Yu, L. M., 8 Sep 2011, In : BMC Medicine. 9, 103.

Research output: Contribution to journalArticle

Type 2 Diabetes Mellitus
Peripheral Vascular Diseases
Statistical Models
PubMed
Sample Size
24 Citations (Scopus)
Premature Infants
Cost-Benefit Analysis
Anxiety
Costs and Cost Analysis
Equipment and Supplies
280 Citations (Scopus)

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., 1 Jan 2014, In : New England Journal of Medicine. 371, 2, p. 140-149 10 p.

Research output: Contribution to journalArticle

Asphyxia
Hypothermia
Brain Diseases
Control Groups
Newborn Infant
5 Citations (Scopus)

Evaluation of Haemophilus influenzae Type b Vaccine for Routine Immunization in Nepali Infants

Metz, J. A., Hanieh, S., Pradhan, R., Joshi, A., Shakya, D., Shrestha, L., Shrestha, A., Upadhyay, B., Kelly, S. C., John, T. M., Maharjan, B. D., Yu, L. M., Omar, O., Borrow, R., Findlow, J., Kelly, D. F., Thorson, S. M., Adhikari, N., Murdoch, D. R. & Pollard, A. J., 1 Jan 2012, In : Pediatric Infectious Disease Journal. 31, 4, p. e66-e72

Research output: Contribution to journalArticle

Haemophilus Vaccines
Bacterial Antibodies
Haemophilus Infections
Carrier State
Haemophilus influenzae type b
3 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 journalArticle

Type 2 Diabetes Mellitus
Mental Health
Anxiety
Quality of Life
Depression
4 Citations (Scopus)

How do qataris source health information?

Choudhury, S., Arora, T., Alebbi, S., Ahmed, L., Y Aden, A., Omar, O. & Taheri, S., 1 Nov 2016, In : PLoS One. 11, 11, e0166250.

Research output: Contribution to journalArticle

health information
Qatar
Health
Internet
health services
18 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, 199.

Research output: Contribution to journalArticle

Manuscripts
Randomized Controlled Trials
Checklist
Publications
Guidelines
3 Citations (Scopus)
Diabetes Mellitus
Glucose
Body Mass Index
Area Under Curve
Meals
18 Citations (Scopus)

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., 1 Sep 2013, In : Archives of Disease in Childhood. 98, 9, p. 686-691 6 p.

Research output: Contribution to journalArticle

Vaccination
Meningococcal Vaccines
Glycoconjugates
Vaccines
Antibodies

Low-energy total diet replacement intervention in patients with type 2 diabetes mellitus and obesity treated with insulin: A randomized trial

Brown, A., Dornhorst, A., McGowan, B., Omar, O., Leeds, A. R., Taheri, S. & Frost, G. S., 28 Jan 2020, In : BMJ Open Diabetes Research and Care. 8, 1, e001012.

Research output: Contribution to journalArticle

Open Access
Type 2 Diabetes Mellitus
Obesity
Insulin
Diet
Weight Loss
76 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., 1 Feb 2016, In : The Lancet Neurology. 15, 2, p. 145-153 9 p.

Research output: Contribution to journalArticle

Xenon
Asphyxia
Hypothermia
Randomized Controlled Trials
Parturition
4 Citations (Scopus)
Qatar
Research
Altruism
Health Services Accessibility
Fear
11 Citations (Scopus)

Persistence of serum bactericidal antibody one year after a booster dose of either a glycoconjugate or a plain polysaccharide vaccine against serogroup C neisseria meningitidis given to adolescents previously immunized with a glycoconjugate vaccine

De Whalley, P. C. S., Snape, M. D., Kelly, D. F., Banner, C., Lewis, S., Diggle, L., John, T. M., Yu, L. M., Omar, O., Borkowski, A. & Pollard, A. J., 1 Nov 2011, In : Pediatric Infectious Disease Journal. 30, 11

Research output: Contribution to journalArticle

Serogroup C Neisseria meningitidis
Glycoconjugates
Polysaccharides
Vaccines
Antibodies
6 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., 1 Jan 2014, In : Clinical and Vaccine Immunology. 21, 8, p. 1164-1168 5 p.

Research output: Contribution to journalArticle

Meningococcal Vaccines
Conjugate Vaccines
Polysaccharides
Vaccines
Randomized Controlled Trials
3 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., de Witt, J. P., El Azab, N. & Eisenberg, D., 24 May 2018, In : BMC Psychiatry. 18, 1, 147.

Research output: Contribution to journalArticle

Middle East
Psychiatry
Students
Anxiety Disorders
Qatar
Sleep
Obesity
Pediatric Obesity
Life Style
Odds Ratio

The Prospective Association Between Electronic Device Use Before Bedtime and Academic Attainment in Adolescents

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

Research output: Contribution to journalArticle

Social Networking
Cell Phones
Technology
Equipment and Supplies
Television
5 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., 1 Feb 2018, (Accepted/In press) In : Diabetes and Vascular Disease Research.

Research output: Contribution to journalArticle

Carotid Arteries
Aorta
Adipose Tissue
Atherosclerosis
Magnetic Resonance Imaging
Comment/debate

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., 1 Jan 2014, In : Obstetrical and Gynecological Survey. 69, 11, p. 639-641 3 p.

Research output: Contribution to journalComment/debate

Review article
76 Citations (Scopus)

A systematic review finds prediction models for chronic kidney disease were poorly reported and often developed using inappropriate methods

Collins, G. S., Omar, O., Shanyinde, M. & Yu, L. M., 1 Mar 2013, In : Journal of Clinical Epidemiology. 66, 3, p. 268-277 10 p.

Research output: Contribution to journalReview article

Chronic Renal Insufficiency
Chronic Kidney Failure
Renal Insufficiency
Statistical Models
PubMed
169 Citations (Scopus)

External validation of multivariable prediction models: A systematic review of methodological conduct and reporting

Collins, G. S., De Groot, J. A., Dutton, S., Omar, O., Shanyinde, M., Tajar, A., Voysey, M., Wharton, R., Yu, L. M., Moons, K. G. & Altman, D. G., 19 Mar 2014, In : BMC Medical Research Methodology. 14, 1, 40.

Research output: Contribution to journalReview article

Validation Studies
Calibration
PubMed
Sample Size
Publications
56 Citations (Scopus)

Interventions to improve professional adherence to guidelines for prevention of device-related infections

Flodgren, G., Conterno, L. O., Mayhew, A., Omar, O., Pereira, C. R. & Shepperd, S., 28 Mar 2013, In : Cochrane Database of Systematic Reviews. 2013, 3, CD006559.

Research output: Contribution to journalReview article

Guideline Adherence
Mechanical Ventilators
Ventilator-Associated Pneumonia
Equipment and Supplies
Infection