Handbook of SAS DATA Step Programming

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Acknowledgments

This book would not have been possible without the tremendous support

ofmy mentor, Prof. Stanley Azen, who provided me the opportunity to teach

my SAS class at the Department of Preventive Medicine at the University of

Southern California (USC) for the past ve years. The accumulated course

materials bear an imprint upon this book. I would also like to express my

sincere gratitude to Prof. Jim Gauderman, my rst SAS teacher, who taught

me much while I was his student and his teaching assistant. I also have

to thank Prof. Roberta Mckean-Cowdin, who enriched my hands-on SAS

experience from the many research projects that were ...