siera package

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siera: Streamlining CDISC ARD Generation

With siera, generating Analysis Results Datasets (ARDs) has never been easier. Our R package seamlessly integrates CDISC’s Analysis Results Standard (ARS), transforming structured metadata into ready-to-run R scripts. Here’s how siera simplifies the process:

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    Effortless Metadata Ingestion

    • Accepts JSON and Excel formats (aligned with CDISC standards)

    • Reads ARS metadata to define analysis components automatically

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    Seamless TFL Integration

    • Produces ARDs that align with TFL outputs

    • Ensures traceability, reproducibility, and automation

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    Instant R Script Generation

    • Transforms ARS metadata into ready-to-run R scripts

    • No manual programming—just plug in your ADaM dataset

    • Generates the ARD for seamless TFL reporting

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    Smart Automation for Clinical Analysis

    • Identifies Analysis Sets (e.g., SAFFL = "Y")

    • Groups data dynamically (e.g., Group by TRT01A)

    • Handles subsets and filters (e.g., AGE > 65)

    • Performs statistical operations (Mean, SD, etc.)

siera takes the guesswork out of clinical data analysis

Eliminate inefficiencies, reduce manual coding, and let automation handle the heavy lifting. With siera, your analysis workflow is faster, smarter, and fully CDISC-compliant.

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Get Instant access to our ARS Whitepaper!

All You Need to Know about the New CDISC Analysis Result Standards!

The Analysis Results Standard (ARS), developed by CDISC, is designed to streamline, automate, and standardize the way clinical trial analysis results are structured. It ensures automation, reproducibility, reusability, and traceability across datasets—eliminating inefficiencies caused by inconsistent reporting methods.

At its core, ARS provides a Logical Data Model that defines analysis results and their associated metadata, creating a consistent framework for organizing and automating clinical trial outputs, such as tables and figures.

All You Need to Know about the New CDISC Analysis Result Standards!

Got Questions? We've Got Answers

What do I need in order to use siera?

In order to use siera, the user needs a populated ARS (Analysis Results Standard) metadata JSON file describing the reporting event outputs. This ARS metadata can be produced by using TFL Designer. Furthermore, the ADaM datasets underlying the outputs described in the ARS metadata is required as input.

How would using siera impact the current workflow of TFL generation?

In traditional TFL generation, each TFL is manually and individually programmed. With siera, there would be a greater focus on setting up the ARS metadata prospectively, which may require a larger effort in terms of metadata configuration. Once the metadata is configured, however, siera automatically generates results (ARDs) for all outputs. The final step of creating the display from the ARD, is not in the scope of siera, but combining the ARD with Display Metadata would fill this gap (consider looking at tfrmt R package).

Where can I learn more about ARS, using siera, or finding support for implementation?

As a foundational CDISC standard, ARS can be found here: Analysis Results Standard. The GitHub page for siera, with code examples, can be found here: GitHub - siera. If any assistance or consulting services are required, feel free to reach out to info@clymbclinical.com.

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