Hadeel S.

I am Hadeel Sherif, a highly experienced and skilled Biostatistician and Clinical Research Consultant with a proven track record of success in conducting comprehensive biostatistical analyses for various research studies. I have done the whole statistical analysis of more than 120 projects including 6 MSc theses at reputable European universities and also I have contributed to PhD theses at British universities and peer-reviewed publications across international journals, including the Q1 Cornea Journal, Journal of Cardiothoracic Surgery, and Veterinary and Comparative Orthopaedics and Traumatology (VCOT). The projects included all aspects of biostatistical analysis, from sample size calculations and statistical analysis plan development to data analysis, interpretation, and reporting. Including dozens of statistical analysis methods of parametric and non-parametric hypothesis testing (t-test, ANOVA, MANOVA, MANCOVA, Repeated measures ANOVA, Mann Whitney, Kruskal Wallis, Wilcoxon Signed Rank, ...), Chi square test family (Exact tests: Fisher's and Monte Carlo's, McNemar, ...), Regression analysis (Linear multiple regression, Logistic regression including Binary, Ordinal and Multinomial Logistic regression), Dimension reduction techniques (Factor Analysis and Principle Component Analysis), Survival Analysis, and Propensity Scores Matching, also advanced statistical modeling techniques, including mixed models, GEE models, SEM models and others relevant to complex research questions. My Services include: Sample Size Calculations: Accurately determine appropriate sample sizes for your studies, ensuring research has the power to detect meaningful results.(G-power, Epi-Info, Med-Calc, and NCSS-PASS) Statistical Analysis Plan (SAP) Development: Precisely craft comprehensive SAPs outlining statistical methods and procedures, ensuring research integrity and validity. Data Analysis: Expertly analyze data using various statistical software packages (R, IBM-SPSS, Stata, and JMP). Data Interpretation and Reporting: Effectively interpret study results, draw meaningful conclusions, and present them clearly and concisely in tables, graphs, and narratives. R Scripting: Provide well-documented R scripts detailing statistical analyses performed on data, ensuring transparency and reproducibility. Statistical Modeling: Utilize advanced techniques like mixed models and GEE models to tackle complex research questions and assess the impact of various factors. My Qualifications: Diploma in Biomedical Informatics and Medical Statistics, Medical Research Institute, Alexandria University, Egypt (GPA 3.66) Certified Biostatistician Diploma Candidate, MARS-Medical Agency for Research and Statistics-UK Data Management in R Course Completion with Top Achiever Badge, MARS-Medical Agency for Research and Statistics-UK Meta-analysis methodology (Fast Publication Track), MARS-Medical Agency for Research and Statistics-UK Extensive experience in biostatistical analysis for diverse research projects (systematic reviews, meta-analyses, clinical trials) Peer-Reviewed Publications: 1. Priddy J, Bardan AS, Tawfik HS, Liu C, Abdelazim AM, Alaaeldin B, Amer AM, Rizk A, Mahmoud D, Elsobky Y, Fadaly AS, Elshazly M. Systematic review and meta-analysis of the medium- and long-term outcomes of the Boston Type I keratoprosthesis. *Cornea*. 2019;38:1465-1473. 2. Abdelazim AM, Alaaeldin B, Amer AM, Rizk A, Mahmoud D, Elsobky Y, Tawfik H, Fadaly AS, Elshazly M. Hemofilters versus hemodialyzers: impacts on cytokine removal during cardiopulmonary bypass in pediatric cardiac surgery: a randomized controlled trial. *J Cardiothorac Surg*. 2026;21(1):199. 3. Knight JM, Kudnig S, Ng J, Shaw T, Tawfik H, Bushell R, Marenda M. Effects of ethylene oxide sterilisation on the in vitro antimicrobial activity of preformulated antibiotic-impregnated calcium sulfate beads. *Veterinary and Comparative Orthopaedics and Traumatology*. 2026. R Markdown Expertise: Access my R markdown file for the Data Management in R course project, showcasing my proficient R programming skills. Satisfied Clients: Read testimonials from previous clients who commend my expertise, communication skills, and ability to deliver high-quality results. Teaching experience in Biostatistics, Clinical Pharmacokinetics, Critical Appraisal of Medical Literature, Drug Information Resources, Pharmacoeconomics, and Epidemiology. Additional Skills: Statistical reviewing of manuscripts My Commitment: I am committed to providing high-quality biostatistical services that meet the highest standards of rigor and accuracy. I am passionate about research and dedicated to helping researchers achieve their goals through sound biostatistical analysis.