power-analysis

power-analysis is a command for coding agents from choxos/BiostatAgent. It costs 18 tokens per session (761 once invoked), scanned A, original, MIT.

A calculator for statistical power in clinical trials. Statistical power estimates how likely a study is to detect a real effect under chosen design and analysis conditions.

In plain words
What is it for?
Use it to calculate power for different clinical-trial designs, scenarios, analysis methods, and parameters using the supported simtrial or Mediana frameworks.
Why use it?
It helps compare trial scenarios and determine whether a planned study has enough participants or information to answer its question.

Command

Part of the clinical-trial-simulation plugin — 7 skills, 5 commands, 7 agents shipped together

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.

agentmods
npx agentmods add commands/choxos/biostatagent/power-analysis
Clone the repo
git clone --depth 1 https://github.com/choxos/BiostatAgent

Or install clinical-trial-simulation, the plugin that ships this one along with the rest of its 7 skills, 5 commands, 7 agents.

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 power-analysis

README.md
[![agentmods](https://agentmods.dev/badge/commands/choxos/biostatagent/power-analysis.svg)](https://agentmods.dev/commands/choxos/biostatagent/power-analysis)
Your own site
<a href="https://agentmods.dev/commands/choxos/biostatagent/power-analysis"><img src="https://agentmods.dev/badge/commands/choxos/biostatagent/power-analysis.svg" alt="Measured on agentmods" height="20"></a>
Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 761 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00018 $0.00761
Opus 5 $0.00009 $0.00380
Sonnet 5 $0.00004 $0.00152
Haiku 4.5 $0.00002 $0.00076

Measured 4d ago against content hash 8c5a1a209cc7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

power-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 4d 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/clinical-trial-simulation/commands/power-analysis.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Power Analysis Workflow

Overview

Calculate statistical power for clinical trial designs across multiple scenarios, analysis methods, and design parameters.

Workflow Phases

Phase 1: Requirements Gathering

Based on responses, determine whether to use simtrial (TTE) or Mediana (CSE) framework.

Phase 2: Model Selection

Phase 3: Power Calculation

Phase 4: Review

Read the full file on GitHub · 106 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. 4d ago First seen · 106 lines · 18 tokens per session scan A 8c5a1a209cc7

Subscribe to this mod's changes

power-analysis is a command published in the GitHub repository choxos/BiostatAgent (11 stars, last pushed 3mo ago), licensed MIT. It adds 18 tokens to every session and 761 once invoked, about $0.0001 per session on Opus 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 2026-08-30.