Osama Altayar

4.5k total citations · 3 hit papers
50 papers, 2.9k citations indexed

About

Osama Altayar is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Epidemiology. According to data from OpenAlex, Osama Altayar has authored 50 papers receiving a total of 2.9k indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Surgery, 15 papers in Pulmonary and Respiratory Medicine and 9 papers in Epidemiology. Recurrent topics in Osama Altayar's work include Gastrointestinal disorders and treatments (6 papers), Helicobacter pylori-related gastroenterology studies (6 papers) and Gastric Cancer Management and Outcomes (5 papers). Osama Altayar is often cited by papers focused on Gastrointestinal disorders and treatments (6 papers), Helicobacter pylori-related gastroenterology studies (6 papers) and Gastric Cancer Management and Outcomes (5 papers). Osama Altayar collaborates with scholars based in United States, Canada and Peru. Osama Altayar's co-authors include M. Hassan Murad, Yngve Falck–Ytter, Shahnaz Sultan, Perica Davitkov, Hashem B. El‐Serag, Shazia Mehmood Siddique, Zhen Wang, Reem A. Mustafa, Joseph D. Feuerstein and Larry J. Prokop and has published in prestigious journals such as Gastroenterology, The Journal of Clinical Endocrinology & Metabolism and Clinical Infectious Diseases.

In The Last Decade

Osama Altayar

48 papers receiving 2.8k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

AGA Clinical Practice Guidelines on Management of Gastric Intestinal Metaplasia

2019 189 citations Hashem B. El‐Serag, Perica Davitkov et al. Gastroenterology profile →
AGA Clinical Practice Guideline on Systemic Therapy for Hepatocellular Carcinoma

2022 131 citations Grace L. Su, Osama Altayar et al. Gastroenterology profile →
AGA Clinical Practice Guideline on Fecal Microbiota–Based Therapies for Select Gastrointestinal Diseases

2024 89 citations Osama Altayar et al. Gastroenterology profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Osama Altayar United States	29	1.1k	719	644	589	406	50	2.9k
Fateh Bazerbachi United States	28	2.1k 2.0×	670 0.9×	308 0.5×	570 1.0×	640 1.6×	152	3.9k
Salman Al‐Sabah Kuwait	24	1.5k 1.4×	425 0.6×	323 0.5×	207 0.4×	102 0.3×	92	2.1k
Saija Hurme Finland	30	2.5k 2.4×	392 0.5×	127 0.2×	287 0.5×	303 0.7×	100	3.7k
Bernadette Mermillod Switzerland	32	1.1k 1.1×	755 1.1×	192 0.3×	845 1.4×	562 1.4×	100	3.4k
Jeffrey A. Lowell United States	42	2.9k 2.7×	678 0.9×	152 0.2×	518 0.9×	1.2k 3.0×	166	5.7k
Sarah Worley United States	32	1.1k 1.0×	665 0.9×	187 0.3×	139 0.2×	1.0k 2.5×	132	3.9k
Gülali Aktaş Türkiye	36	505 0.5×	263 0.4×	391 0.6×	1.1k 1.9×	1.2k 3.0×	161	3.7k
Nicolás Meyer France	30	987 0.9×	805 1.1×	297 0.5×	266 0.5×	902 2.2×	157	3.3k
Fredrik Granath Sweden	30	449 0.4×	201 0.3×	195 0.3×	225 0.4×	467 1.2×	58	3.0k
Nina Kohn United States	24	510 0.5×	311 0.4×	198 0.3×	601 1.0×	603 1.5×	136	2.8k

Countries citing papers authored by Osama Altayar

Since Specialization

Citations

This map shows the geographic impact of Osama Altayar's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Osama Altayar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Osama Altayar more than expected).

Fields of papers citing papers by Osama Altayar

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Osama Altayar. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Osama Altayar. The network helps show where Osama Altayar may publish in the future.

Co-authorship network of co-authors of Osama Altayar

This figure shows the co-authorship network connecting the top 25 collaborators of Osama Altayar. A scholar is included among the top collaborators of Osama Altayar based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Osama Altayar. Osama Altayar is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Altayar, Osama, Tala Mahmoud, Dayna S. Early, et al.. (2024). Clinical predictors of significant findings on EUS for the evaluation of incidental common bile duct dilation. Gastrointestinal Endoscopy. 100(4). 670–678.e1. 1 indexed citations

Morgan, Rebecca L., Yngve Falck–Ytter, Reem A. Mustafa, et al.. (2024). Simultaneous evaluation of the imprecision and inconsistency domains of GRADE can be performed using prediction intervals. Journal of Clinical Epidemiology. 175. 111543–111543. 2 indexed citations

Holt, Peter R., Osama Altayar, & David Alpers. (2023). Height with Age Affects Body Mass Index (BMI) Assessment of Chronic Disease Risk. Nutrients. 15(21). 4694–4694. 11 indexed citations

Alayo, Quazim A., Osama Altayar, Kerri Glassner, et al.. (2022). Systematic Review With Meta-analysis: Safety and Effectiveness of Combining Biologics and Small Molecules in Inflammatory Bowel Disease. Crohn s & Colitis 360. 4(1). otac002–otac002. 57 indexed citations

Su, Grace L., Osama Altayar, Robert O’Shea, et al.. (2022). AGA Clinical Practice Guideline on Systemic Therapy for Hepatocellular Carcinoma. Gastroenterology. 162(3). 920–934. 131 indexed citations breakdown →

Altayar, Osama, Raj Shah, Charissa Chang, Yngve Falck–Ytter, & Andrew J. Muir. (2022). AGA Technical Review on Systemic Therapies for Hepatocellular Carcinoma. Gastroenterology. 162(3). 937–951. 4 indexed citations

Sultan, Shahnaz, Shazia Mehmood Siddique, Siddharth Singh, et al.. (2021). AGA Rapid Review and Guideline for SARS-CoV2 Testing and Endoscopy Post-Vaccination: 2021 Update. Gastroenterology. 161(3). 1011–1029.e11. 21 indexed citations

Rockey, Don C., Osama Altayar, Yngve Falck–Ytter, & Denise Kalmaz. (2020). AGA Technical Review on Gastrointestinal Evaluation of Iron Deficiency Anemia. Gastroenterology. 159(3). 1097–1119. 35 indexed citations

Ko, Cynthia W., Shazia Mehmood Siddique, Amit Patel, et al.. (2020). AGA Clinical Practice Guidelines on the Gastrointestinal Evaluation of Iron Deficiency Anemia. Gastroenterology. 159(3). 1085–1094. 104 indexed citations

10.

Hasak, Stephen, Rena Yadlapati, Osama Altayar, et al.. (2020). Prolonged Wireless pH Monitoring in Patients With Persistent Reflux Symptoms Despite Proton Pump Inhibitor Therapy. Clinical Gastroenterology and Hepatology. 18(13). 2912–2919. 36 indexed citations

11.

Siddique, Shazia Mehmood, Shahnaz Sultan, Joseph K. Lim, et al.. (2020). Spotlight: COVID-19 PPE and Endoscopy. Gastroenterology. 159(2). 759–759. 7 indexed citations

12.

Ko, Cynthia W., Shazia Mehmood Siddique, Amit Patel, et al.. (2020). Spotlight: Gastrointestinal Evaluation of Iron Deficiency Anemia. Gastroenterology. 159(3). 1096–1096.

13.

Sultan, Shahnaz, Joseph K. Lim, Osama Altayar, et al.. (2020). AGA Rapid Recommendations for Gastrointestinal Procedures During the COVID-19 Pandemic. Gastroenterology. 159(2). 739–758.e4. 194 indexed citations

14.

Altayar, Osama, Perica Davitkov, Shailja C. Shah, et al.. (2019). AGA Technical Review on Gastric Intestinal Metaplasia—Epidemiology and Risk Factors. Gastroenterology. 158(3). 732–744.e16. 72 indexed citations

15.

Davitkov, Perica, Osama Altayar, Shailja C. Shah, et al.. (2019). Advancing the Science in Gastric Pre-Neoplasia: Study Design Considerations. Gastroenterology. 158(3). 751–759. 1 indexed citations

16.

Gawron, Andrew J., Shailja C. Shah, Osama Altayar, et al.. (2019). AGA Technical Review on Gastric Intestinal Metaplasia—Natural History and Clinical Outcomes. Gastroenterology. 158(3). 705–731.e5. 100 indexed citations

17.

Han, Ma Ai Thanda, Osama Altayar, Shadi Hamdeh, et al.. (2018). Rates of and Factors Associated With Placebo Response in Trials of Pharmacotherapies for Nonalcoholic Steatohepatitis: Systematic Review and Meta-analysis. Clinical Gastroenterology and Hepatology. 17(4). 616–629.e26. 86 indexed citations

18.

Valentin, Nelson, Michael Camilleri, Osama Altayar, et al.. (2015). Biomarkers for bile acid diarrhoea in functional bowel disorder with diarrhoea: a systematic review and meta-analysis. Gut. 65(12). 1951–1959. 107 indexed citations

19.

Mauck, Karen F., Noor Asi, Chaitanya Undavalli, et al.. (2014). Systematic review and meta-analysis of surgical interventions versus conservative therapy for venous ulcers. Journal of Vascular Surgery. 60(2). 60S–70S.e2. 37 indexed citations

20.

Ali, Akbar, Barham K. Abu Dayyeh, Todd H. Baron, et al.. (2013). Rectal Nonsteroidal Anti-inflammatory Drugs Are Superior to Pancreatic Duct Stents in Preventing Pancreatitis After Endoscopic Retrograde Cholangiopancreatography: A Network Meta-analysis. Clinical Gastroenterology and Hepatology. 11(7). 778–783. 86 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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