performing-statistical-analysis

performing-statistical-analysis is a skill for Claude Code from MannLabs/proteomics-agent-skills. It costs 51 tokens per session (853 once invoked), scanned A, original, Apache-2.0.

A guide to differential expression analysis for proteomics, which tests whether protein levels differ between experimental conditions. It covers comparisons between two or more groups, statistical tests, false-discovery control, and standard plots.

In plain words
What is it for?
Use it to compare control and treatment groups, analyse multi-group experiments, test complex study designs, identify changed proteins, and create volcano plots.
Why use it?
Random variation can make proteins appear different when they are not. Statistical testing helps separate likely real changes from noise while accounting for many proteins being tested.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the proteomics plugin — 11 skills shipped together

Good fit Use it to compare control and treatment groups, analyse multi-group experiments, test complex study designs, identify changed proteins, and create volcano plots.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mannlabs/proteomics-agent-skills/performing-statistical-analysis
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add MannLabs/proteomics-agent-skills --skill performing-statistical-analysis
Clone the repo
git clone --depth 1 https://github.com/MannLabs/proteomics-agent-skills

Made for: Claude Code.

Or install proteomics, the plugin that ships this one along with the rest of its 11 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for performing-statistical-analysis

README.md
[![agentmods](https://agentmods.dev/badge/skills/mannlabs/proteomics-agent-skills/performing-statistical-analysis/github.svg)](https://agentmods.dev/skills/mannlabs/proteomics-agent-skills/performing-statistical-analysis)
Your own site
<a href="https://agentmods.dev/skills/mannlabs/proteomics-agent-skills/performing-statistical-analysis"><img src="https://agentmods.dev/badge/skills/mannlabs/proteomics-agent-skills/performing-statistical-analysis/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for performing-statistical-analysis

Your own site · 80×15
<a href="https://agentmods.dev/skills/mannlabs/proteomics-agent-skills/performing-statistical-analysis"><img src="https://agentmods.dev/badge/skills/mannlabs/proteomics-agent-skills/performing-statistical-analysis.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 853 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00051 $0.00853
Opus 5.5 $0.00020 $0.00341
Sonnet 5.5 $0.00010 $0.00171
Haiku 4.5 $0.00005 $0.00085

Measured 3d ago against content hash b75ada0af095, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

performing-statistical-analysis scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/proteomics/skills/performing-statistical-analysis/SKILL.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Performing Proteomics Statistical Analysis

The goal of Differential Expression Analysis (DEA) is to identify proteins that change significantly between conditions.

Context

Experimental conditions

  • Pairwise (2 Groups): Explicitly define "Control" vs. "Treatment"
  • Multi-Group (>2 Groups):
    • Reference-based: Compare every condition against a universal control (e.g., Drug_A vs Ctrl, Drug_B vs Ctrl).
    • All-vs-All: Compare every permutation (e.g., Drug_A vs Drug_B).
    • Global: Use ANOVA to detect if any change exists across groups.

Statistical models

  • t-test: The default for pairwise comparisons. With small sample sizes (typically n < 5 per group), use moderated t-tests (e.g., limma's eBayes), which borrow variance information across proteins to stabilize estimates.
  • ANOVA: Required when comparing more than two groups simultaneously.
  • Linear models: Recommended for complex designs. Use standard linear models for factorial (case-control) designs or batch correction; use linear mixed-effects models specifically when you have repeated measures (e.g., paired samples, time-courses) to account for within-subject correlation.

Multiple Testing Correction

Correcting the resulting p-values for multiple finding testing. The standard correction method to control false positives identifications is Benjamini-Hochberg FDR.

2. Workflow Statistical Testing

Copy this checklist and track progress:

Testcase Progress:
- [ ] Step 1: Define the experimental conditions for comparision
- [ ] Step 2: Run statistical model
- [ ] Step 3: Apply Multiple Testing Correction
- [ ] Step 4: Filter for regulated proteins
- [ ] Step 5: Create a Volcano plot
- [ ] Step 6: Create a Heatmap
- [ ] Step 7: Export results

Step 1: Define the experimental conditions for comparision

Check the study context (Experiment.md) and the prompt.

  • For 2 Groups: Define group1 (Control) and group2 (Treatment).
  • For >2 Groups: Select Strategy A (ANOVA for global differences) or Strategy B (Specific Pairwise Contrasts).

Read the full file on GitHub · 73 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 73 lines · 51 tokens per session scan A b75ada0af095

Subscribe to this mod's changes

performing-statistical-analysis is a skill published in the GitHub repository MannLabs/proteomics-agent-skills (16 stars, last pushed 4d ago), licensed Apache-2.0. It adds 51 tokens to every session and 853 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-15.

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