DASS · ANALYSIS CLINIC

Analysis Troubleshooting Worksheet

Define the problem before changing the model. Keep a record of what each check shows and what remains unresolved.

Complete this for your own planning. Do not include participant identifiers, confidential records, or sensitive details in an initial inquiry. This worksheet does not diagnose your study or replace a full analysis plan.

1. Describe the problem

Research question, outcome, intended comparison, and claim

Exact warning or reviewer concern; where it occurs

Data structure: observations, repeated measures, clusters, and missingness

Model, variable coding, software / package versions, and relevant clinic case

Deadline, consequences, and what would count as a resolved question

DASS · CHECKS AND DECISIONS

2. Document the investigation

Checks attempted: what changed, what stayed fixed, and result of each check

Data / coding issues ruled out; unresolved issues and evidence needed

Candidate explanations and assumptions behind each one

Defensible options: what each changes about the question or interpretation

Sensitivity checks and how conclusions differ across justified options

Next action, responsible person, review date, and remaining limitations

Save the original inputs and code before revisions. Keep versions and record deviations from your plan. Read the Analysis Clinic cases or ask about your analysis. Prepared October 10, 2026.