Hire the Best Biostatisticians
in Serbia

Top Rated Plus top 3% of Upwork talent | 250+ satisfied clients | 9+ years of experience Academic writer and editor: PhDs, master's theses, honour's theses, Q1 and Q2 papers Data analyst: R, Python, SPSS, STATA, PowerBI, Tableau | Survey & experimental data, Business reports, UX research, A/B testing, Econometrics, Biostatistics, Medical data, Text analysis, and much more. I always deliver excellent work, on time, and with the possibility of explanations and modifications. You can always reach me (within 6-8 hours at most), and I will make sure you are satisfied with my work every step of the way.

I am an experienced researcher in the area of psychology and social sciences with more than two decades of experience in doing research, leading research teams, and teaching statistics, psychometrics, and research methodology. - I design research studies, do statistical analysis of your data, and present the results in the format you need them. - If you need consultations on research methodology, research design, data analysis, getting insights from your data, preparing a project or presenting results, I can help. - An experienced psychometrician, I design questionnaires and scales, do analyses of responses and answers, and help you draw correct conclusions from the data. - I review both AI-generated and human-created work, ensuring that methods, assumptions, and conclusions are statistically valid and logically sound. I can identify hidden errors, misinterpretations, and risks, providing clear guidance so decisions are based on reliable and defensible evidence. I work quickly and thoroughly, closely following the requirements of the client. The quality of my work and the satisfaction of my clients are always my top priorities. I hold a PhD in psychology and work as a university professor. My fortes include research methodology, psychometrics, statistical analysis, and cross-cultural assessment, but also market research. I authored and coauthored a number of scientific papers and scientific books, some of them published by top-tier academic publishers. For 8 years, I have been the editor-in-chief of a SSCI-referenced journal in psychology, the most influential scientific journal in my part of the world. I have extensive experience editing and preparing scientific papers in various roles in scientific journals. I also enjoy writing on science topics for nonacademic audiences and am quite good at it. Some of my recent publications in the English language include: Hedrih, V. (2020). Adapting Psychological Tests and Measurement Instruments for Cross-Cultural Research: An Introduction (1st Edition). Routledge, Taylor&Francis Group. Hedrih, V., & Hedrih, A. (2022). Interpreting Statistics for Beginners : a Guide for Behavioural and Social Scientists. Routledge, Taylor&Francis Group..

I help researchers and health professionals produce high-quality scientific articles, systematic reviews, and meta-analyses that meet journal standards and drive evidence-based decisions. I bring extensive hands-on expertise in analysing topics across health, nutrition, clinical research, public health, and humanitarian and business programs (you are welcome to explore my past projects for details). Regardless of the field, my priority is the same: to deliver high-quality, methodologically rigorous, and thoroughly evaluated work grounded in reliable evidence. More specifically, I can help you with: 🧠 Academic Research & Writing Systematic reviews and meta-analyses Scientific literature review Manuscript writing and preparation for journal publication Academic proofreading and editing Research report drafting and revision 📊 Data Analysis & Statistics Biostatistical analysis using SPSS and R Statistical interpretation and summary writing Data visualization and analytical reporting (valuable for theses, dissertations, and scientific publications) 📚 Scientific & Technical Writing Article and blog writing with a research focus Nutrition and health content creation grounded in evidence Consultative writing support tailored to academic and professional goals I work with clients who value methodological rigour, clear communication, and reliable results.

If your research is stuck on that pesky bioinformatics analysis, just reach out and we can solve it together. I am a medical doctor, currently awaiting my PhD defence, with substantial experience in statistics and bioinformatics. I worked with clinical data (patient history, labs, imaging like ultrasound, CT, MRI), and omics data (transcriptomics, proteomics, metabolomics, radiomics). I use R Studio to do all statistical tests needed and also perform RNASeq analysis, including differential gene expression analysis, PPI, GSEA (usually comparing to KEGG database), network analysis, deconvolution of cell markers from bulkRNA data, etc. I dabble in Machine Learning, but that is a publication waiting to happen so if needed, I can help there, but not my expertise (yet :D). I can also create publication-ready graphs for you. As my employer, you are my top priority. You can expect the maximal dedication to the project, professional behavior, and reliability regarding deadlines. If you still don't trust me, check out some of my publications. Contact me now, and we can start working together. P.S. I also work as an editor for medical content and that is why there are a bunch of jobs related to writing and editing in my work history.

I possess a degree in Psychology and have been proficient in conducting statistical analyses using SPSS, JASP, and Excel since 2013. I have also worked as a Clinical Trial Consultant, where my primary responsibilities include organizing the entire clinical trial, preparing tests, surveys, and checklists, and performing statistical analysis on the collected data. I have experience in managing and cleaning datasets and running and interpreting various statistical tests. My areas of expertise include: ✅ Setting up databases ✅ Performing statistical tests such as ANOVA, Regression, t-tests, Exploratory Factor Analysis (EFA) as well as Confirmatory Factor Analysis (CFA), Correlation Analysis, Reliability, Descriptive statistics, and Chi-Square. ✅ Interpreting statistical results in detail ✅ Exporting and creating charts, scree plots, and tables according to APA standards ✅ Providing technical and professional support in setting up the methodology, questionnaires, and the entire research paper, if required. I am passionate about research and evaluation and enjoy working with and collecting new data. I believe that better work is done while enjoying what we do.