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"PASS is a great program. It does so much and is easy to use. It’s much better than the other sample size programs I’ve used—it has helped me greatly in my research."

—Ken Lawson, Ph.D., The University of Texas

NCSS is an excellent tool for clinical and epidemiological research that is both user friendly and economical with excellent support. It removes the "fear of statistics" from clinical research and makes research accessible to all curious clinicians.

—Ted Rosenberg, MD MSc. FRCP(C), Clinical Assistant Professor, University of British Columbia