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Animal Welfare and 3Rs

Biostatistics Consulting

Biostatistics consulting service

To improve the quality of animal research, we offer statistical methods consultation, including advice on study design, sample size calculation, methods for data analysis and reporting. We encourage you to consult us during the planning phase of your study, so that potential improvements can be made.

We provide a maximum of an hour appointment that is free of charge for animal researchers of UZH. The free 1h-consultation is per license or per study. You can utilize our free service simply by fill in the online form "Request Animal Research Consulting".

Note that this 1h-consultation is NOT A VERIFICATION of experimental design & the planned statistical analysis of your application (new Form A, par 31). In the moment we do not have capacity for the verification.

We use and promote the free software R. We provide an interactive web app SampleSizeR to calculate sample size based on power analysis for confirmatory experimental designs.

We also offer Contractual Consulting and Contractual Data Analysis with a standardized fee, for internal UZH researchers and external researchers. Contact Bernadetta Tarigan for more information.

Resources and request for a biostatistics consulting

Biostatistics Workshops/Courses

We offer biostatistics workshops for research groups of UZH, from basic to advance topics. The workshop can be accredited as 0.5-day, 1-day or 2-days of continuous education for persons involved in animal experiments by the veterinary office of the canton of Zurich. Examples of sequential topics are:

  1. Writing-up Form A: Planning and Sample Size Estimation (0.5-d);
  2. Statistical Considerations for Designing a Rigorous Animal Experiment (1-d / 2-d);
  3. Introduction to the Most Common Experimental Designs: Completely Randomized Designs, Block Designs, Split-Plot Designs (1-d);
  4. Introduction to R (0.5-d / 1-d);
  5. R & Reproducibility with R-Markdown (0.5-d / 1-d);
  6. Mathematical Framework of ANOVA and Hands-On Data Analysis with R (1-d / 2-d), see verbatim testimonial (PDF, 111 KB);
  7. ANOVA with Repeated Measures in Time (1-d);
  8. Considering Sex as Biological Variable (SABV) in Experimental Design (0.5-d / 1-d);
  9. Other tailor-made topics that your group might need (0.5-d / 1-d / 2-d).

The workshop is with a fee. Contact Bernadetta Tarigan for more information.

Dr. Bernadetta Tarigan

Bernadetta Tarigan is a qualified senior statistician with more than ten years of practical experience in consulting and data analysis in interdisciplinary applications including life sciences, using R-programming.

She obtained herPh.D. in mathematical statistics at Seminar for Statistics, ETH Zurich in 2008. Subsequently she worked as a Postdoc at Statistics for Life Sciences of Vrije Universiteit Amsterdam collaborating with Dept. of Computational Neuroscience. Since 2010 she run her own business Tarigan Statistical Consulting providing consulting, data analysis, tailor-made teaching and workshop for academy and industry. Parallel to it she also worked at Management Information System Group of ETH Zurich supervising statistical study designs (2012-2015) and at Applied Wood Materials Laboratory of EMPA Dübendorf modelling time-to-event (2016–2017).

Since June 2018 Bernadetta Tarigan is supporting statistical consulting team of Dept. of Psychology UZH (external 10%). Since October 2019 she is supporting general statistical consulting of Applied Statistics group of Institute of Mathematics UZH (internal 20%).

Since February 2019 Bernadetta Tarigan is supporting the Department Animal Welfare and 3R with biostatistical consulting service (internal 50%).

Weiterführende Informationen

Contact: Dr. Bernadetta Tarigan


Winterthurerstr. 190, CH-8057 Zürich

Tel +41 44 635 58 55

(request for consulting: simply fill in the form "Request Animal Research Consulting")

Working days: Mon afternoon, Tue, Thu