Guides
Answers for the analysis
questions that stall a study.
Short, sourced explanations of the data preparation and reporting decisions clinical research teams run into with questionnaire, patient-reported outcome, and survey data. Written by the Sutrix founders.
Working with statisticians
6 min read
How long statistical analysis takes for a manuscript, and what makes it slow
Where the time goes between a finished survey and a submitted manuscript, what stretches each stage, and what to prepare before handing over the data.
Supratik Panuganti · September 18, 2026Analysis and reporting
7 min read
Confirmatory versus exploratory findings: how to label them so reviewers trust both
Pre-specified versus exploratory findings: why the label changes how a result should be read, and how to report both in one manuscript without overclaiming.
Supratik Panuganti · September 18, 2026Study design
7 min read
Sample size for a survey or questionnaire study: what to power for and what to report
How many participants a questionnaire or PRO study needs: pick the primary comparison, a defensible effect size, allow for non-response, and report it.
Ritvik Panuganti · September 18, 2026Working with statisticians
7 min read
Do you need a biostatistician for a survey or PRO study?
When a survey or PRO study needs biostatistics support, what a biostatistician does at each stage, and your options when the campus core has a waitlist.
Ritvik Panuganti · September 18, 2026Data preparation
7 min read
How to score a validated questionnaire from a raw survey export
Turn raw questionnaire exports into scored instruments: item mapping, reverse coding, subscales, missing-item rules, and the checks reviewers expect.
Ritvik Panuganti · September 18, 2026Data preparation
8 min read
Handling missing responses in patient-reported outcome data
What to do when participants skip items or whole questionnaires in a PRO study: describe the missingness, and know which methods reviewers accept.
Ritvik Panuganti · September 18, 2026Analysis and reporting
6 min read
Reporting Likert data in a manuscript: when means are fine and when they are not
How to summarize and test Likert items and scales for publication: item versus scale, which statistics fit each, and how to present them.
Supratik Panuganti · September 18, 2026