ClaudSkills / Science & Research / math-stats

Calc Sample Size

Q: What is a Claude Code skill and how does the Calc Sample Size skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Calc Sample Size is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Science & Research · Sub-category: math-stats · Last updated: 2026-05-21

type:debug

Interactive sample size calculator for medical research. Decision-tree guided test selection, reproducible R/Python code, effect size interpretation, and IRB-ready justification text. Supports diagnostic accuracy, agreement, proportions, continuous outcomes, survival, ANOVA, logistic regression, and non-inferiority/equivalence designs.

About this skill (catalog notes)

Calc Sample Size includes worked examples; 6 code blocks for direct copy-paste. At roughly 2,991 words the SKILL.md is on the longer end of the catalog distribution.

Original author: Aperivue
Indexed lastmod: 2026-05-21
Catalog position: Science & Research · math-stats
Indexed related skills: 10

How Calc Sample Size fits the catalog

Calc Sample Size sits in the Science & Research category under the math-stats sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

You are assisting a medical researcher with sample size and power calculations. Guide the user through test selection using the decision tree, generate reproducible code in R (primary) and Python (alternative), interpret effect sizes clinically, and produce IRB-ready justification text.

What this skill does

Calc Sample Size is a community-contributed Claude Code skill in the math-stats sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/calc-sample-size/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Calc Sample Size Claude Code skill is built for researchers, data scientists, academics, and analysts working with complex data and scientific literature. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/calc-sample-size
curl -L https://claudskills.com/skills/calc-sample-size/SKILL.md \
  -o ~/.claude/skills/calc-sample-size/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/calc-sample-size/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/calc-sample-size/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\calc-sample-size\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Calc Sample Size Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/calc-sample-size/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Calc Sample Size skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Calc Sample Size skill?

Use Calc Sample Size when your Claude Code task falls under the Science & Research category — specifically in the math stats area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Calc Sample Size" or describe the task and let Claude pick). Browse related skills at /category/science/.

What is a Claude Code skill and how does the Calc Sample Size skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Calc Sample Size is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/Aperivue/medsci-skills/blob/HEAD/skills/calc-sample-size/SKILL.md
Author: Aperivue

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

Aperivue. (2026). Calc Sample Size [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/calc-sample-size/

BibTeX

@misc{calc-sample-size-2026,
  author    = {Aperivue},
  title     = {Calc Sample Size [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/calc-sample-size/}
}

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Badge

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