Stratified Randomization Natively managed within your trial.

Our integrated randomization module enables simple, stratified randomization directly within the Clindox EDC platform—no external systems needed.

Randomization Made Simple

From simple 1:1 allocation to complex stratified designs, our module handles it all.

Stratified Allocation

Define multiple stratification factors (site, age group, disease severity) with flexible ratio configurations.

Secure & Auditable

Full audit trail for regulatory compliance. Randomization codes are securely encrypted and blinded as needed.

Real-Time Balancing

Dynamic allocation algorithms ensure treatment arms remain balanced even with rolling enrollment.

Flexible Configuration for Any Trial Design

Whether you're running a simple two-arm trial or a complex adaptive design, our randomization module adapts to your protocol requirements.

Set up stratification factors in minutes, define allocation ratios (1:1, 2:1, or custom), and control blinding at the site, investigator, or patient level.

Block Randomization Support

Control block sizes to maintain balance throughout enrollment.

Multi-Site Coordination

Centralized randomization across global sites with instant allocation.

Setup in 4 Simple Steps

  1. Define Treatment Arms
    Specify arm names and allocation ratios.
  2. Set Stratification Factors
    Add factors like site, age, or disease stage.
  3. Configure Blinding
    Control who can see treatment assignments.
  4. Activate & Randomize
    System is ready for real-time patient allocation.

What Our Clients Say

"The Clindox team have been an incredible support and are always available to help in any way they can."
MARIA GALLIGAN
PMD SOLUTIONS

"The time and cost saving is really significant. We're very happy with the performance of CRFweb and I wouldn't hesitate to recommend it."
DR SALVI
CRF HEALTH, INDIA

"CRFWEB eCRF, plus their helpful and accommodating staff, helped us quickly set up and personalize, with quick turn-around times of modifications, exactly what we, the clinical staff, and statistical consultants demanded, all at an affordable price."
NIGEL MCLEAN
CYTOSYSTEMS, UK

"The Clindox (CRFWEB) team are dedicated and enthusiastic about accommodating the unique requirements of each individual study and are great value for money."
KELLY SEAMANS
ATLANTIA

Next Steps

Ready to see stratified randomization in action? Book a personalized demo with our clinical systems team.