PASS

NCSS

PASS is a simple yet powerful program for determining the size of an experimental design. PASS performs power analyses and calculates sample size.

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Product information "PASS"

🧪 PASS® – Professional Software for Sample Size Calculation & Power Analysis

PASS is one of the leading solutions for sample size determination, power analysis, and statistical precision planning—essential for clinical trials, medical research, and pharmaceutical development projects.

With over 680 validated procedures and 230+ study designs, PASS offers unmatched methodological flexibility in a highly intuitive interface.

✅ Why Choose PASS?

📊 680+ validated procedures for power and sample size analysis
🔬 230+ study design templates for maximum methodological versatility
🖥️ Intuitive workflow – Get results in just 3 steps: choose a design, enter parameters, interpret output
📈 Built-in visualizations – Clean, exportable graphs and plots for every analysis
📄 Compatible with Word, Excel, and more – Export results directly into reports and presentations
🧠 Easy to learn, fast to apply – Ideal for researchers, statisticians, and trial planners

🔍 Typical Applications

✔️ Clinical trial planning (Phase I–IV)
✔️ Pharmacological & epidemiological studies
✔️ Biostatistics & health sciences
✔️ Medical devices & public health research
✔️ Academic & regulatory study planning

🧩 Key Features at a Glance

🔹 Optimal sample size calculation
🔹 Perform power analysis for a wide range of statistical tests
🔹 Analyze statistical test sensitivity and power
🔹 Supports designs including: parallel groups, crossover, survival analysis, non-inferiority, and more
🔹 Confidence interval planning & effect size estimation
🔹 Support for one- and two-sided hypothesis testing
🔹 Clear output with inline help, definitions, and guidance
🔹 Expandable report builder with notes, custom text & selected output exports

🛠️ Examples of Included Tests

📍 t-tests (one-sample, two-sample, paired)
📍 ANOVA & ANCOVA
📍 Chi-square tests
📍 Logistic regression
📍 Cox regression
📍 Survival analysis
📍 Poisson models
📍 Non-inferiority & equivalence tests
📍 Confidence interval planning for means, proportions, and more

💬 Conclusion: PASS – Your Trusted Partner for Precise Study Design

With PASS, you can avoid under- or overpowered studies, save time and resources, and ensure the statistical integrity of your research. Whether you're working in clinical trials, pharma, or public health, PASS provides the ideal combination of scientific depth and ease of use.

📥 Try PASS or request a consultation today:
➡ Learn more at the official PASS website: www.ncss.com/software/pass

🎯 PASS® – Effortless and Professional Power Analysis & Sample Size Calculation

PASS is a powerful yet user-friendly software solution for sample size determination and power analysis. With over 680 statistical procedures and scenarios, PASS offers one of the most comprehensive collections of validated methods for study planning and trial evaluation—clear, efficient, and scientifically sound.

✅ Why Choose PASS?

📈 680+ statistical procedures – for nearly every study design
🧠 Calculates power, sample size, effect size, and alpha error
🖱️ Easy to use – Clear navigation for data input and method selection
📊 Auto-generated charts and summaries – Instantly exportable for reporting
📄 Clear, well-structured output – Ready for use in reports and publications
💬 Built-in help & tutorials – Includes formulas, examples, and references
💻 Standalone software – No dependency on other statistics programs
📚 Validated results – Each procedure is scientifically documented

🔬 Common Use Cases

✔️ Clinical trials (Phases I–IV)
✔️ Pharmaceutical research & development
✔️ Epidemiological studies
✔️ Public health & healthcare sciences
✔️ Biostatistics & academic research

🧩 Feature Overview

🔹 Power analysis – Supports over 230 study designs
🔹 Sample size calculation – For tests and confidence intervals
🔹 Post hoc power estimation – Evaluate the strength of existing studies
🔹 Advanced visualizations – Power curves, effect size comparisons & more
🔹 Ready-to-use outputs – Copy directly into Word, Excel, and other tools
🔹 Multi-output manager – Gallery-style result navigation
🔹 Comprehensive documentation – Includes help texts, videos, formulas & references

🛠️ How PASS Works in 3 Simple Steps

1️⃣ Choose your study design – Use dropdown menus, search, or category filters
2️⃣ Enter parameters – Guided input fields with context-sensitive help
3️⃣ Interpret your results – With clear graphs and textual summaries
➡️ Optional: Save, export, or insert your results into reports (e.g., MS Word)

💬 Conclusion: PASS – Your Trusted Tool for Accurate Study Planning

PASS is the ideal software for anyone involved in clinical, medical, or academic research who needs solid, evidence-based study planning. It is more comprehensive, intuitive, and cost-effective than many comparable tools—and it runs independently of other statistics software.

📥 Learn more or try the free demo today:
➡ Visit the official PASS product page at NCSS.com

Systemvoraussetzungen für die Software PASS

In order to run PASS, your computer must meet the following minimum standards:

Processor:
- 450 MHz or faster processor
- 32-bit (x86) or 64-bit (x64) processor
RAM:
- 256 MB (512 MB recommended)
Operating Systems:
- Windows 10 or later
- Windows 8.1
- Windows 8
- Windows 7
- Windows Vista with Service Pack 2 or higher
- Windows Server 2016 or later
- Windows Server 2012 R2
- Windows Server 2012
- Windows Server 2008 SP2/R2
Privileges:
- Administrative rights required during installation only
Third Party Software:
- Microsoft .NET 4.6 (Comes pre-installed with Windows 10 or later and Windows Server
  2016 or later. Installation required on Windows 8.1 or earlier and Windows Server
  2012 R2 or earlier. For systems where .NET 4.6 installation is required, a .NET 4.6
  download helper will start automatically when you run the PASS setup file.)
- Microsoft Windows Installer 3.1 or higher
- Adobe Reader® 7 or higher (required for the Help System only)
Hard Disk Space:
- 220 MB for PASS (plus space for Microsoft .NET 4.6 if not already installed)
Printer:
- Any Windows-compatible inkjet or laser printer

PASS on a Mac

A Windows emulator (such as Parallels) is required to run PASS 16 on a Mac.

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