Global Sample

Our proprietary panels covering millions of engaged people are continuously scrutinized and deeply profiled on more than 200 attributes.


Combining the power of global proprietary and partner panels

Diverse & Extensive Global
Proprietary Panels

We employ numerous traditional and innovative techniques and resources to build our own diverse and extensive panels worldwide. Varied methods of recruitment ensure a wide respondent pool from which to collect your data.

API Connectivity to Partner
Global Panels

Through the combined power of proprietary Schlesinger Group panels and highly scrutinized third-party panel providers, we are your single point of access to leading panels around the world.

Leverage our industry-leading innovation and experienced teams to solve your most difficult research challenges

Predictive Models


Connect with the right audience for your surveys every time

Programmatic Sampling


Gain real-time access to millions of respondents via API-based sampling

Respondent Behavior Analysis

Respondent Behavior

Schlesinger QualityScore™ ensures only high-quality responses by identifying and eliminating bots and fraudsters

Automated Incentive Management

Automated Incentive

Your participants benefit from fast and easy incentive management across a range of options

Access millions of verified and deeply profiled nationwide and niche audiences in more than 50 countries

We maintain minimum possible bias by pooling respondents from a variety of panels with different recruitment methodologies


We profile our consumers on 200+ attributes comprising demographics, behaviors, and interests.

Business Professionals

Business Professionals

Connect with C-suite, decision makers, and small business owners across a wide range of industries.

We are a global leader in healthcare and patient surveys. With one of the largest expert teams in the industry, we deliver unparalleled consultative experience in this field
Healthcare Professionals

Healthcare Professionals

We recruit a broad range of healthcare professionals including physicians, KOLs, advisors, nurses, physicians’ assistants, pharmacists, veterinarians, and administrators such as healthcare payers and their specialties.



We track over 386 medical conditions in our panel of patients and caregivers. We also track consumers’ choices and behaviors around health and well-being.

When your needs are more complex or sensitive, you can even access a robust panel of more than one million government-ID validated respondents across the US. Tap into this premium audience to ensure the utmost quality and confidentiality with your results.

Laser Focus on Your Data Quality

Group of people

Onboarding Humans and Blocking Bots

IP screening

Digital fingerprinting

Fraudster prevention

Checkmark person

Every Panelist

Doubt opt-in

Quality Survey

LinkedIn verification

Magnifying glass

Respondent Behavior

Cross-panel deduplication

Respondent behavior analysis

Redirect fraud prevention

Schlesinger QualityScore™

Sample Blending

Leveraging our intelligent PanelEngine models, our blended sample minimizes the insights bias and delivers high-quality insights, faster.

For clients who need consistent sample over time for large or multi-wave projects, we blend the sample across a wide variety of recruitment sources to create an accurate representative sample.

Schlesinger QualityScore™

Powered by advanced data science and automation our proprietary QualityScore™ ranks respondents on their ongoing survey participation behaviors. QualityScore™ identifies fraudsters, bots, and professional survey takers to ensure you get true market insights.

Digital face

A word about our in-house advanced data science lab

A world class team of 100+ data scientists and engineers continuously innovates our products to deliver the best respondent experience and high-quality insights.

Browse Our Panel Books

Schlesinger Group answers to ESOMAR 37 questions

Schlesinger Quantitative is delighted to provide clear answers to these questions to help you gain a better understanding of how we manage and maintain our panels to ensure the highest quality data.

Optimize your next survey with our experienced teams and technology-led platforms for faster, high-quality results at scale

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