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Hire Abdallfatah A.

Egypt

USD 30 /hr

Biomedical Researcher & Biostatistician & Scientific Writer & Peer Reviewer

Profile Summary

Clinical researcher with 30+ peer-reviewed papers and conference outputs, and +40 completed peer review activity across the top Gastroenterology and internal medicine journals. I'm skilled in: Conducting systematic reviews & network and pairwise meta-analyses: including protocol formulation, screening, extraction, risk-of-bias, quantitative synthesis, forest/funnel plots, sensitivity/subgroup/leave-one-out, and TSA. Biostatistics & data analysis: study design, power/sample size calculation, descriptive & inferential stats, regression (logistic, Cox, mixed-effects), survival analysis (KM/Cox), visualization, and reproducible scripts. Manuscript writing and modification: original research, brief reports, letters, conference abstracts, cover letters, journal selection, and response-to-reviewers. Data sources & tooling & softwares: R (meta/metafor/netmeta/ggplot2), STATA, SPSS, Jamovi/JASP, Zotero/EndNote. I also tutored and taught research to more than a 200 medical student through more than hundred hours of sessions and courses online and offline on the basics of research and statistics, evidence-based medicine, critical appraisal, cross-sectional study, and systematic review and meta-analysis.

Subject Matter Expertise

• ☆ Biostatistics
• ☆ Statistics
• ☆ Meta-Analysis
• ☆ STATA
• ☆ R
• ☆ Clinical Trials
• ☆ Clinical Trials Data Analysis
• ☆ Gastroenterology & Hepatology
• ☆ Colorectal Cancer
• ☆ Pancreatic Cancer
• ☆ Stomach & Esophageal Cancer
• ☆ Crohn's Disease
• ☆ Hepatitis
• ☆ Irritable Bowel Syndrome (IBS)
• ☆ Liver Cancer

Services

• Writing
• Research

Writing Medical Writing

Research User Research, Meta-Research, Gap Analysis, Gray Literature Search, Scientific and Technical Research, Systematic Literature Review

Work Experience

MENTOR

Publication hub

May 2025 - Present

Education

October 6 University Faculty of Medicine

- Present

Certifications

• Certified Peer Reviewer

  ELSEVIER

  October 2025 - Present

Publications

JOURNAL ARTICLE

Abdallfatah Abdallfatah, Samaa Daoud, Ahmed W. Hageen, Donia T. Mahdy, Hazem Abosheaisha, Douglas G. Adler (2026). Underwater Versus Conventional EMR for Superficial Nonampullary Duodenal Tumors ≤20 mm . Journal of Clinical Gastroenterology.

Abdallfatah Abdallfatah, Mohamed A. Aldemerdash, Ahmed W. Hageen, Samaa Daoud, Mahmoud Elbaklish, Mohammed Hassan Morsy, Ahmed R. A. Abou-Shanab, Islam Mohamed, Hazem Abosheaishaa (2026). Optimizing colonoscopy with abdominal compression devices: an updated meta-analysis of randomized controlled trials . Baylor University Medical Center Proceedings.

Aref, Ahmed, Aldemerdash, Mohamed A., Mohamed, Islam, Abdallfatah, Abdallfatah, Abosheaishaa, Hazem, Telbany, Ahmed, Dahiya, Dushyant Singh, Ghoz, Hassan, Duong, Nikki (2026). Efficacy and safety of tenapanor in the management of irritable bowel syndrome with constipation: a systematic review and meta-analysis . European Journal of Gastroenterology & Hepatology.

Abdallfatah Abdallfatah, Ahmed Hamdy G. Ali, Samaa Daoud, Douglas G Adler (2025). A Head-To-Head Comparison of Diclofenac Versus Indomethacin for the Prophylaxis of Post-ERCP Pancreatitis: A Systematic Review and Meta-Analysis . American Journal of Therapeutics.

Abdallfatah Abdallfatah, Bishoy Beshay, Mark Nasseem, Imad Samman Tahhan, Mohammad Kloub, Riddhi Machchhar, Samaa Daoud, Mohamed Hamed, Hazem Abosheaishaa (2025). Remimazolam versus propofol for gastrointestinal endoscopic sedation: A systematic review and meta-analysis of randomized controlled trials with GRADE assessment . Perioperative Care and Operating Room Management.

Hazem Abosheaishaa, Abdallfatah Abdallfatah, Iyiad Alabdul Razzak, Mohammad N. Kloub, Salma Allam, Ahmed Yasser Abdelaziz Shaban, Amr Dokmak, Omar Ahmed, Wael T. Mohamed, Taranika S. das, et al. (2025). ENDOSCOPIC FULL-THICKNESS RESECTION VERSUS SUBMUCOSAL TUNNEL ENDOSCOPIC RESECTION FOR TREATMENT OF UPPER GASTROINTESTINAL LESIONS: A SYSTEMATIC REVIEW AND META-ANALYSIS . Gastrointestinal Endoscopy.

Hazem Abosheaishaa, Mohammed Youssef, Layth Alzubaidy, Hossam Elnaggar, Mohamad Elgozair, Warsha M. Korani, Salma Allam, Mohamed Eldesouki, Ali Wakil, Raissa Mbakop, et al. (2025). OVER-THE-SCOPE CLIP TECHNIQUE VERSUS STANDARD ENDOSCOPIC THERAPY IN PEPTIC ULCER BLEEDING: A SYSTEMATIC REVIEW AND META-ANALYSIS . Gastrointestinal Endoscopy.

Long Cong Duy Tran, Thanh Quoc Nguyen, Mohammad Najm Dadam, Thuan Duc Nguyen, Dat Tien Le, Viet Quoc Dang, Phu Hong Pham, Nghia Phuoc Phan, Abdallfatah Abdallfatah, Thinh Quan Vo, et al. (2025). Portal vein embolization and subsequent major hepatectomy for hepatocellular carcinoma with insufficient residual liver volume: experience of a tertiary center . Updates in Surgery.

Hazem Abosheaishaa, Abdallfatah Abdallfatah, Imad Samman Tahhan, Abdelmalek Abdelghany, Iyiad Alabdul Razzak, Mohamed Amer, Ahmed Y. Azzam, Muhammed Amir Essibayi, Mahmoud Nassar, Omar Abdelhalim, et al. (2025). Safety and Efficacy of Na Alginate and Mesna in Endoscopic Submucosal Dissection: A Systematic Review and Meta-analysis . ASIDE Gastroenterology.

Hazem Abosheaishaa, Hesham Elsayed, Omar Abdelhalim, Mohamed K. Harfoush, Abdallfatah Abdallfatah, Arshia Sethi, Mohammed Abusuliman, Rahul Karna, Mohammad Bilal (2025). Vonoprazan and amoxicillin dual therapy versus bismuth-based therapy for <i>Helicobacter pylori</i> eradication: a systematic review and meta-analysis of randomized controlled trials . Baylor University Medical Center Proceedings.

Ahmed E. Salem, Syed Matthew Kodilinye, Morad Zaaya, Carla Barberan Parraga, Sarah Meribout, Samar Pal S. Sandhu Sandhu, Cherry Aye, Kantash Kumar, Joseph A. Menand, Neha Sharma, et al. (2025). Insights into the Epidemiology and Determinants of Helicobacter Pylori Negative Gastritis: A Retrospective Study . ASIDE Gastroenterology.

Hazem Abosheaishaa, Abdallfatah Abdallfatah, Abdelmalek Abdelghany, Arshia Sethi, Abdellatif Ismail, Doha Mohamed, Moataz Aboeldahb, Omar Abdelhalim, Islam Mohamed, Ahmed Y. Azzam, et al. (2025). Dexmedetomidine as an Adjunctive Sedative in Patients Undergoing Endoscopic Submucosal Dissection: A Systematic Review and Meta-Analysis . ASIDE Gastroenterology.

Abdallfatah, Abdallfatah, Aldemerdash, Mohamed A., Hageen, Ahmed W., Daoud, Samaa, Elbaklish, Mahmoud, Morsy, Mohammed Hassan, Abou-Shanab, Ahmed R. A., Mohamed, Islam, Abosheaishaa, Hazem (2025). Optimizing colonoscopy with abdominal compression devices: an updated meta-analysis of randomized controlled trials . Baylor University Medical Center Proceedings.

(2025). Intermittent vs Continuous Proton Pump Inhibitor Therapy for Bleeding Peptic Ulcer: An Updated Systematic Review and Meta-Analysis . AMERICAN JOURNAL OF GASTROENTEROLOGY.

Abosheaishaa, Hazem, Abdallfatah, Abdallfatah, Abdelhalim, Omar, Eldesouki, Mohamed, Allam, Salma, Nageswaran, Gomathy, Hakim, Fnu, Elgozair, Mohamad, Zombrano, Huber Padilla, Elshaer, Mahassen Akram, et al. (2025). Intermittent vs Continuous Proton Pump Inhibitor Therapy for Bleeding Peptic Ulcer: An Updated Systematic Review and Meta-Analysis . The American Journal of Gastroenterology.

(2025). Optimizing Colonoscopy With Abdominal Compression Devices: An Updated Meta-Analysis of Randomized Controlled Trials . AMERICAN JOURNAL OF GASTROENTEROLOGY.

Abdallfatah, Abdallfatah, Aldemerdash, Mohamed A., Hageen, Ahmed W., Mohamed, Islam, Elbaklish, Mahmoud, Hassan Morsy, Mohammed, Abou-Shanab, Ahmed R. A., Salem, Ahmed, Eldesouki, Mohamed, Abusuliman, Mohammed, et al. (2025). Optimizing Colonoscopy With Abdominal Compression Devices: An Updated Meta-Analysis of Randomized Controlled Trials . The American Journal of Gastroenterology.

(2025). Remimazolam Versus Propofol for Gastrointestinal Endoscopic Sedation: A Systematic Review and Meta-Analysis of Randomized Controlled Trials . AMERICAN JOURNAL OF GASTROENTEROLOGY.

Abdallfatah, Abdallfatah, Beshay, Bishoy, Nasseem, Mark, Tahhan, Imad, Kloub, Mohammad, Daoud, Samaa, Machchhar, Riddhi, Allam, Salma, Salem, Ahmed, Elhossiny, Nermin, et al. (2025). Remimazolam Versus Propofol for Gastrointestinal Endoscopic Sedation: A Systematic Review and Meta-Analysis of Randomized Controlled Trials . The American Journal of Gastroenterology.

(2025). Safety and Efficacy of Guselkumab in the Treatment of Inflammatory Bowel Diseases: A Meta-Analysis of Randomized Controlled Trials . AMERICAN JOURNAL OF GASTROENTEROLOGY.

Allam, Salma, Sayed, Mohamed Saad, Fahim, Bishoy, Mohammed, Ibrahim, Takawy, Marina, Al-Aquily, Mohammed, Abdallfatah, Abdallfatah, El Badrawy, Fatma, Elhossiny, Nermin, Aldemerdash, Mohamed A., et al. (2025). Safety and Efficacy of Guselkumab in the Treatment of Inflammatory Bowel Diseases: A Meta-Analysis of Randomized Controlled Trials . The American Journal of Gastroenterology.

Abosheaishaa, Hazem, Elsayed, Hesham, Abdelhalim, Omar, Haddad, Islam Mohsen El, Harfoush, Mohamed K, Abdallfatah, Abdallfatah, Sethi, Arshia, Abusuliman, Mohammed, Karna, Rahul, Bilal, Mohammad (2025). Vonoprazan and amoxicillin dual therapy versus bismuth-based therapy for <i>Helicobacter pylori</i>eradication: a systematic review and meta-analysis of randomized controlled trials . Baylor University Medical Center Proceedings.

Abosheaishaa, Hazem, Abdallfatah, Abdallfatah, Samman Tahhan, Imad, Abdelghany, Abdelmalek, Alabdul Razzak, Iyiad, Amer, Mohamed, Azzam, Ahmed Y., Essibayi, Muhammed Amir, Nassar, Mahmoud, Abdelhalim, Omar, et al. (2025). Safety and Efficacy of Na Alginate and Mesna in Endoscopic Submucosal Dissection: A Systematic Review and Meta-analysis . ASIDE Gastroenterology.

(2025). Remimazolam versus propofol for gastrointestinal endoscopic sedation: A systematic review and meta-analysis of randomized controlled trials with GRADE assessment . PERIOPERATIVE CARE AND OPERATING ROOM MANAGEMENT.

Abdallfatah, Abdallfatah, Beshay, Bishoy, Nasseem, Mark, Tahhan, Imad Samman, Kloub, Mohammad, Machchhar, Riddhi, Daoud, Samaa, Hamed, Mohamed, Abosheaishaa, Hazem (2025). Remimazolam versus propofol for gastrointestinal endoscopic sedation: A systematic review and meta-analysis of randomized controlled trials with GRADE assessment . Perioperative Care and Operating Room Management.

(2025). Efficacy and Safety of FOLFIRINOX as First-Line Treatment for Advanced Biliary Tract Cancers: A Single-Arm Meta-Analysis . AMERICAN JOURNAL OF GASTROENTEROLOGY.

Youssef, Mohammed Y., Elgozair, Mohamad, Takawy, Marina, Abdallfatah, Abdallfatah, Mohamed, Ahmed N., Adam, Mohammad, Abosheaishaa, Hazem (2025). Efficacy and Safety of FOLFIRINOX as First-Line Treatment for Advanced Biliary Tract Cancers: A Single-Arm Meta-Analysis . The American Journal of Gastroenterology.

(2025). Efficacy and Safety of Tenapanor in Irritable Bowel Syndrome With Constipation (IBS-C): A Systematic Review and Meta-Analysis . AMERICAN JOURNAL OF GASTROENTEROLOGY.

Aref, Ahmed, Aldemerdash, Mohamed A., Mohamed, Islam, Abdallfatah, Abdallfatah, Abosheaishaa, Hazem, Dahiya, Dushyant S., Ghoz, Hassan, Duong, Nikki (2025). Efficacy and Safety of Tenapanor in Irritable Bowel Syndrome With Constipation (IBS-C): A Systematic Review and Meta-Analysis . The American Journal of Gastroenterology.

(2025). Efficacy of Endocuff Vision-assisted colonoscopy in improving adenoma detection rate: an updated systematic review and meta-analysis of randomized controlled trials . SCANDINAVIAN JOURNAL OF GASTROENTEROLOGY.

Abdallfatah, Abdallfatah, Daoud, Samaa, W. Hageen, Ahmed, Tarek Mahdy, Donia, Abosheaishaa, Hazem (2025). Efficacy of Endocuff Vision-assisted colonoscopy in improving adenoma detection rate: an updated systematic review and meta-analysis of randomized controlled trials . Scandinavian Journal of Gastroenterology.

(2025). Endoscopic Submucosal Dissection Versus Trans-Anal Endoscopic Surgery for Rectal Tumors: An Updated Systematic Review and Meta-Analysis . AMERICAN JOURNAL OF GASTROENTEROLOGY.

Abdallfatah, Abdallfatah, Aldemerdash, Mohamed A., Gadelmawla, Ahmed Farid, Fakhoury, Butros, Bahnasy, Ahmed, Salolin-Vargas, Vanessa Pamela, Hamed, Mohamed, Morsy, Mohammed Hassan, Allam, Salma, Abou-Shanab, Ahmed R. A., et al. (2025). Endoscopic Submucosal Dissection Versus Trans-Anal Endoscopic Surgery for Rectal Tumors: An Updated Systematic Review and Meta-Analysis . The American Journal of Gastroenterology.

Ahmed E. Salem, Syed Matthew Kodilinye, Morad Zaaya, Carla Barberan Parraga, Sarah Meribout, Samar Pal S. Sandhu Sandhu, Cherry Aye, Kantash Kumar, Joseph A. Menand, Neha Sharma, et al. (2025). Insights into the Epidemiology and Determinants of Helicobacter Pylori Negative Gastritis: A Retrospective Study . ASIDE Gastroenterology.

Abosheaishaa, Hazem, Abdallfatah, Abdallfatah, Abdelghany, Abdelmalek, Sethi, Arshia, Ismail, Abdellatif, Mohamed, Doha, Aboeldahb, Moataz, Abdelhalim, Omar, Mohamed, Islam, Azzam, Ahmed Y, et al. (2025). Dexmedetomidine as an Adjunctive Sedative in Patients Undergoing Endoscopic Submucosal Dissection: A Systematic Review and Meta-Analysis . ASIDE Gastroenterology.

Hazem Abosheaishaa, Abdallfatah Abdallfatah, Abdelmalek Abdelghany, Arshia Sethi, Abdellatif Ismail, Doha Mohamed, Moataz Aboeldahb, Omar Abdelhalim, Islam Mohamed, Ahmed Y. Azzam, et al. (2024). Dexmedetomidine as an Adjunctive Sedative in Patients Undergoing Endoscopic Submucosal Dissection: A Systematic Review and Meta-Analysis .

Hazem Abosheaishaa, Abdelmalek Abdelghany, Abdallfatah Abdallfatah, Doha Mohamed, Ammar Ayman Bahbah, Islam Mohamed, Khaled Elfert, Ahmed E. Salem, Azizullah Beran, Ahmad Madkour, et al. (2024). Efficacy, safety, and impact on procedural outcomes of local anesthesia in endoscopic submucosal dissection: a systematic review and meta-analysis . Baylor University Medical Center Proceedings.

Hazem Abosheaishaa, Abdallfatah Abdallfatah, Omar Abdelhalim, Abdelmalek Abdelghany, Imad Samman Tahhan, Azizullah Beran, Mohamed A. M. Amer, Iyiad AlabdulRazzak, Islam Mohamed, Ahmed E. Salem, et al. (2024). Efficacy and Safety of Sodium Alginate as an Injection Solution in Endoscopic Submucosal Dissection: A Systematic Review and Meta-Analysis . American Journal of Gastroenterology.

Moataz Aboeldahb, Menna Marwan, Abdallfatah Abdallfatah, Hazem Abosheaishaa, Mohammed Abusuliman, Ahmed H. Abdelwahed, Khaled Ali, Abdellatif Ismail, Mohamed Eldesouki, Malak A. Hassan, et al. (2024). Efficacy and Safety of Seladelpar in Primary Biliary Cholangitis: A Systematic Review and Meta-analysis of Randomized Controlled Trials . American Journal of Gastroenterology.

Hazem Abosheaishaa, Abdallfatah Abdallfatah, Omar T. Ahmed, Khaled Elfert, Islam Mohamed, Iyiad AlabdulRazzak, Monzer Abdalla, Arashi Sethi, Omar Abdelhalim, Vijay Reddy Gayam, et al. (2024). The efficacy of Hemospray in managing bleeding related to gastrointestinal tumors: systematic review and meta-analysis . European Journal of Gastroenterology &amp; Hepatology.

Dang The Hung, Linh Tran, Dao Ngoc Hien Tam, Ghada Elshafei, Nguyen The Ky Cuong, Nam Xuan Ha, Sarah Abd Elaziz Khader, Loc Le Quang, Hosam Waleed Shaikhkhalil, Abdallfatah Abdallfatah, et al. (2024). The prevalence of Pfk13 polymorphism in malaria patients treated with artemisinin-based therapy: a systematic review and meta-analysis . Parasitology Research.

Dang The Hung, Linh Tran, Dao Ngoc Hien Tam, Ghada Elshafei, Nguyen The Ky Cuong, Nam Xuan Ha, Sarah Abd Elaziz Khader, Loc Le Quang, Hosam Waleed Shaikhkhalil, Abdallfatah Abdallfatah, et al. (2024). The prevalence of Pfk13 polymorphism in malaria patients treated with artemisinin-based therapy: a systematic review and meta-analysis . Parasitology Research.

(2024). Efficacy and Safety of Seladelpar in Primary Biliary Cholangitis: A Systematic Review and Meta-analysis of Randomized Controlled Trials . AMERICAN JOURNAL OF GASTROENTEROLOGY.

Aboeldahb, Moataz, Marwan, Menna, Abdallfatah, Abdallfatah, Abosheaishaa, Hazem, Abusuliman, Mohammed, Abdelwahed, Ahmed H., Ali, Khaled, Ismail, Abdellatif, Eldesouki, Mohamed, Hassan, Malak A., et al. (2024). Efficacy and Safety of Seladelpar in Primary Biliary Cholangitis: A Systematic Review and Meta-analysis of Randomized Controlled Trials . The American Journal of Gastroenterology.

Hung, D.T., Tran, L., Tam, D.N.H., Elshafei, G., Cuong, N.T.K., Ha, N.X., Khader, S.A.E., Le Quang, L., Shaikhkhalil, H.W., Abdallfatah, A., et al.(2024). The prevalence of Pfk13 polymorphism in malaria patients treated with artemisinin-based therapy: a systematic review and meta-analysis . Parasitology Research. 123. (5).

(2024). The prevalence of Pfk13 polymorphism in malaria patients treated with artemisinin-based therapy: a systematic review and meta-analysis . PARASITOLOGY RESEARCH.

Hung, Dang The, Tran, Linh, Tam, Dao Ngoc Hien, Elshafei, Ghada, Cuong, Nguyen The Ky, Ha, Nam Xuan, Khader, Sarah Abd Elaziz, Quang, Loc Le, Shaikhkhalil, Hosam Waleed, Abdallfatah, Abdallfatah, et al. (2024). The prevalence of Pfk13 polymorphism in malaria patients treated with artemisinin-based therapy: a systematic review and meta-analysis . Parasitology Research.

Abosheaishaa, H., Abdallfatah, A., Ahmed, O.T., Elfert, K., Mohamed, I., AlabdulRazzak, I., Abdalla, M., Sethi, A., Abdelhalim, O., Gayam, V.R., et al.(2024). The efficacy of Hemospray in managing bleeding related to gastrointestinal tumors: systematic review and meta-analysis . European Journal of Gastroenterology and Hepatology. 36. (12). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 1370-1383.

Abosheaishaa, Hazem, Abdelghany, Abdelmalek, Abdallfatah, Abdallfatah, Mohamed, Doha, Bahbah, Ammar Ayman, Mohamed, Islam, Elfert, Khaled, Salem, Ahmed E, Beran, Azizullah, Madkour, Ahmad, et al. (2024). Efficacy, safety, and impact on procedural outcomes of local anesthesia in endoscopic submucosal dissection: a systematic review and meta-analysis . Baylor University Medical Center Proceedings.

Abosheaishaa, H., Abdelghany, A., Abdallfatah, A., Mohamed, D., Bahbah, A.A., Mohamed, I., Elfert, K., Salem, A.E., Beran, A., Madkour, A., et al.(2024). Efficacy, safety, and impact on procedural outcomes of local anesthesia in endoscopic submucosal dissection: a systematic review and meta-analysis . Baylor University Medical Center Proceedings. 37. (6). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 963-969.

OTHER

Abosheaishaa, H., Abdallfatah, A., Abdelghany, A., Sethi, A., Ismail, A., Mohamed, D., Aboeldahb, M., Abdelhalim, O., Mohamed, I., Azzam, A.Y., et al.(2024). Dexmedetomidine as an Adjunctive Sedative in Patients Undergoing Endoscopic Submucosal Dissection: A Systematic Review and Meta-Analysis . medRxiv.