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“headline”: “SOP for Statistical Principles and Deviations (ICH E9/E9(R1))”,
“description”: “This SOP defines standardized procedures for applying statistical principles in clinical trials in compliance with ICH E9 and E9(R1). It outlines requirements for statistical planning, handling of deviations, estimand framework, and documentation for regulatory submissions.”,
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Standard Operating Procedure for Statistical Principles and Deviations (ICH E9/E9(R1))

Purpose

The purpose of this SOP is to provide guidance for the application of statistical principles in clinical trials in accordance with ICH E9 and E9(R1). It defines processes for developing statistical analysis plans, handling deviations, applying the estimand framework, and ensuring robust data interpretation that supports regulatory submissions and scientific validity.

Scope

This SOP applies to sponsors, CROs, biostatisticians, investigators, QA staff, and regulatory affairs professionals engaged in statistical planning, monitoring, and reporting of clinical trial data. It covers development of the Statistical Analysis Plan (SAP), handling protocol deviations, and compliance with ICH E9/E9(R1).

Responsibilities

• Sponsor: Oversees statistical compliance with ICH E9/E9(R1) and ensures SAP approval.
• CRO: Executes statistical analyses and ensures timely reporting of deviations.
• Biostatistician: Develops SAP, applies estimand principles, and conducts statistical analyses.
• Investigator: Documents site-level deviations impacting statistical analyses.
• QA: Audits statistical processes for compliance.

Accountability

The Sponsor’s Head of Biostatistics is accountable for ensuring compliance with statistical principles and deviation management in line with ICH E9/E9(R1).

Procedure

1. Statistical Planning
1.1 Develop SAP before database lock.
1.2 Define endpoints, estimands, and statistical methodologies.
1.3 Record in SAP Development Log (Annexure-1).

2. Handling Protocol Deviations
2.1 Identify and classify deviations (major/minor).
2.2 Assess impact on statistical analyses.
2.3 Document in Deviation Impact Log (Annexure-2).

3. Estimand Framework (ICH E9R1)
3.1 Define treatment effect of interest considering intercurrent events.
3.2 Align estimands with trial objectives and endpoints.
3.3 Document in Estimand Framework Log (Annexure-3).

4. Statistical Analysis
4.1 Conduct primary and secondary analyses per SAP.
4.2 Implement sensitivity analyses to account for missing data.
4.3 Document in Analysis Execution Log (Annexure-4).

5. Reporting and Archiving
5.1 Prepare statistical sections of the CSR.
5.2 Archive SAP, deviations, and statistical outputs in TMF.
5.3 Record in Statistical Archiving Log (Annexure-5).

Abbreviations

• SOP: Standard Operating Procedure
• SAP: Statistical Analysis Plan
• ICH: International Council for Harmonisation
• CSR: Clinical Study Report
• CRO: Contract Research Organization
• QA: Quality Assurance
• TMF: Trial Master File
• Estimand: A precise description of the treatment effect to be estimated

Documents

1. SAP Development Log (Annexure-1)
2. Deviation Impact Log (Annexure-2)
3. Estimand Framework Log (Annexure-3)
4. Analysis Execution Log (Annexure-4)
5. Statistical Archiving Log (Annexure-5)

References

• ICH E9 – Statistical Principles for Clinical Trials
• ICH E9(R1) – Estimands and Sensitivity Analysis
• ICH GCP Guidelines

Version: 1.0

Approval Section

Annexures

Annexure-1: SAP Development Log

Annexure-2: Deviation Impact Log

Annexure-3: Estimand Framework Log

Annexure-4: Analysis Execution Log

Annexure-5: Statistical Archiving Log

Revision History

For more SOPs visit: Pharma SOP